The kinetic energy of the particles is directly proportional to the thermal energy of the system. The correct options are Boiling Point; Decrease; Decrease; Vibrate in place respectively.
Thermal energy and Particles:The kinetic energy of the particles is directly proportional to the thermal energy of the system.So when thermal energy is increased the kinetic energy of the particles is also increased.Boiling Point: It is the temperature where the vapor pressure of the liquid is equal to the surrounding atmospheric pressure.Since the particles of solid-state are bonded by a strong bond hence they vibrate in place when thermal energy is increased.Therefore, the correct options are Boiling Point; Decrease; Decrease; Vibrate in place respectively.
Learn more about Thermal energy:
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60 g of vinegar was used in a chemical reaction with baking soda. The total mass of the products is 140 g. What was the mass of the baking soda
The mass of the baking soda was 80 g
Answer: the mass is 80g
Explanation: In a solution of 140g, we knot that there are 60g of vinegar, the only other component in the solution is baking soda.
Now we want to find the mass of the baking soda in the solution.
Because there are only two components in the solution, if we remove the 60g of vinegar, the residue mass is the mass of the baking soda.
then we need to calculate:
Mass = 140g - 60g = 80g
So the mass of baking soda in the solution is 80g.
what force does a window washer want acting on him when trying to keep the same position
That would be balanced.
The force he applies on himself is balanced force.
Explanation:Balanced force means the net forces applied on himself will be zero. Which is forces applied on right side will be equal to left side forces. And upward forces will be equal to downward forces.According to first law of motion, an object in rest can never be in motion except some force is exerted on it to do so.Hence if force on window washer will be balanced force ( Net force = 0 ), then there will be no motion and he will be in same position.Mr. Harden's class decides to perform an experiment to determine how long it takes different objects to hit the floor when dropped from a desk. The class dropped three balls from a desk, one weighing 2 pounds, one weighing 4 pounds, and one weighing six pounds. It took them all the same amount of time to hit the floor. After evaluating these results, you predict that a 10 pound ball will take
A) more time to hit the floor.
B) less time to hit the floor.
C) about the same amount of time to hit the floor.
D) an unknown amount of time before hitting the floor.
C. About the same amount of time to hit the floor.
I just took a test with this question and got it right :)
Hope this is helpful.
Option C :- about the same amount of time to hit the floor
Because Mass has no effect on how fast things travel in free fall situations . If you look at your kinematics equations none of them consider mass as a variable.
however mass does have effect on energy.
Which of these statements about family relationships is true on Colonel Lloyd’s plantation?
Answer:
THE ANSWER IS D
Explanation:
I DID THE TEST
Wire 1 has a resistance R1. Wire 2 is made of the same material, with length 1/2 as long and diameter 1/4. What is the resistance ratio R2/R1?
-- reduce the length of a wire to 1/2 . . . cut the resistance in half
-- reduce the diameter to 1/4 . . . reduce the cross-section area by (1/4²) . . . increase the resistance by 16x .
-- R2 = (R1) · (1/2) · (16) = 8 · R1
-- R2 / R1 = 8
________ fuel is a renewable alternative to petroleum fuels that is made through either biologically or chemically driven production in a process called gasification.
Gasoline fuel is a renewable alternative to petroleum fuels that is made through either biologically or chemically driven production in a process called gasification.
Answer:
Hydrogen fuel is a renewable alternative to petroleum fuels that is made through either biologically or chemically driven production in a process called gasification.
An object's true weight is 123 N. When it is completely submerged in water, its
apparent weight is 82.0 N. If the density of water is 1000 kg/m3
, then what is the density of the object?
Object true weight is given as
[tex]mg = 123 N[/tex]
now we know that g = 9.8 m/s^2
[tex]m* 9.8 = 123 [/tex]
[tex] m = \frac{123}{9.8} = 12.55 kg[/tex]
now when it is complete submerged in water its apparent weight is given as 82 N
apparent weight = weight - buoyancy force
apparent weight = 82 N
weight = 123 N
now we have
82 = 123 - buoyancy force
buoyancy force = 123 - 82 = 41 N
now we also know that buoyancy force is given as
[tex]F_b = p_{liq}Vg[/tex]
[tex]41 = 1000*V*9.8[/tex]
[tex]V = \frac{41}{1000*9.8}[/tex]
[tex]V = 4.18 * 10^{-3} m^3[/tex]
now as we know that mass of the object is 12.55 kg
its volume is 4.18 * 10^-3 m^3
now we know that density will be given as mass per unit volume
[tex]density = \frac{m}{V}[/tex]
[tex]density = \frac{12.55}{4.18*10^{-3}[/tex]
[tex]density = 3002.4 kg/m^3[/tex]
so here density of object is 3002.4 kg/m^3
Answer:
3000 kg/m^3
Explanation:
True weight = weight in air = 123 N
Apparent weight = weight in water = 82 N
Loss in weight of the object = true weight - apparent weight
Loss in weight = 123 - 82 = 41 N
According to the Archimedes principle, the loss in weight of the object is equal to the buoyant force acting on the object.
Let V be the volume of the object an d be the density of the object.
Buoyant force = volume of the object x density of water x gravity
41 = V x 1000 x g
[tex]V = \frac{41}{1000 g}[/tex] .... (1)
Now, true weight = Volume of the object x density of object x gravity
[tex]123 = \frac{41}{1000 g} \times d\times g[/tex] from (1)
d = 3000 kg/m^3
Match the following examples of energy with the primary form of energy exhibited.
friction:
nuclear power plant:
toaster element:
welding torch:
eraser sitting on a desk edge:
light bulb:
campfire:
moving car:
lump of coal in a storage bin:
stick of TNT:
Options are nuclear, heat, kinetic, potential, light, and solar energy
The primary energy exhibited is:
friction: Heat energy
Due to friction. there is heat loss in mostly all machines.
nuclear power plant: Nuclear energy
In nuclear power plant, fission or fusion of radio-active substances produces large amount of nuclear energy.
toaster element: Heat energy
Heat energy is produced in the toaster when electricity passes through the element. This is used to heat the toasts.
welding torch: Heat energy
The heat energy produced in the welding torch is used in welding.
eraser sitting on a desk edge: Potential energy
Potential energy is possessed by a body due to virtue of its height.
light bulb: Heat energy and light energy.
The element inside the bulb gets heated first and then light energy is produced.
campfire: Heat energy
Heat is produced and then light energy in case of campfire.
moving car: Kinetic energy
A moving body has kinetic energy.
lump of coal in a storage bin: Potential energy
A lump of coal in a storage bin has potential energy.
stick of TNT: potential energy
Stick of TNT is formed of explosive mixture. It contains potential energy.
Answer:
• Friction ( heat )
• Nuclear power plant ( nuclear )
• Toaster element ( heat )
• welding torch ( heat )
• eraser sitting on a desk edge (potential)
• light bulb ( light )
• campfire ( heat )
• moving car ( kinetic )
• lump of coal in a storage bin ( potential )
• stick of tent ( potential)
Explanation: hope this helps !
Starting from rest, the Road Runner accelerates at 3 m/s for ten seconds. What is the final velocity of the Road Runner?
Answer
The answer to this question is [tex]30 ms^{-1}[/tex]
Explanation
As we know that accelartion is the rate of change of velocity. So, it can be write as
[tex]a = (V_f -V_i) /t[/tex]
where
[tex]V_f[/tex] is the final velocity
[tex]V_i[/tex] is the initial velocity
t is the time
a is the accelartion
as we konw
[tex]a = 3 ms^{-2}[/tex]
t = 10 s
From rest So,
[tex]V_i[/tex] = 0
[tex]V_f[/tex] = ?
Putting values
[tex]3 = (V_f - 0)/10[/tex]
[tex]3 * 10 = V_f[/tex]
[tex]30 = V_f[/tex]
[tex]V_f = 30 ms^{-1}[/tex]
So, the right answe is [tex]30 ms^{-1}[/tex]
(3 m/s²) x (10 s) = 30 m/s
His speed at the end of 10 sec is 30 m/s. We can't describe his velocity, because we have no information about the direction he's moving.
Jill and Scott both road their bikes for 30 minutes. Jill traveled 5 kilometers and Scott traveled 10. Calculate each person's speed and tell who rode faster. (s=d/t)
A)Scott had the faster speed since he rode at 20 k/h while Jill only traveled 10 km/h.
B)Scott had the faster speed since he rode at 10 km/h and Jill was riding at 5 km/h
C)Jill was traveling faster. She was riding at a speed of 10 km/h while Scott was traveling at 20 km/h.
D)Both Jill and Scott were traveling at the same speed since they both rode their bikes for 30 minutes.
time for which Jill and Scott both traveled is 30 min
as we know that
1 hour = 60 min
now we will convert the time of travel from minutes to hour
[tex]t = \frac{30 min}{60 min}* 1 hour[/tex]
[tex]t = 0.5 hour[/tex]
now we will have to find the speed of both
For speed we know the formula
[tex]speed = \frac{distance}{time}[/tex]
speed of Jill as he cover 5 km in 30 min
[tex]v_1 = \frac{5}{0.5} = 10 km/h[/tex]
speed of Scott as he cover 10 km in 30 min
[tex]v_2 = \frac{10}{0.5}= 20 km/h[/tex]
so correct answer is
A)Scott had the faster speed since he rode at 20 k/h while Jill only traveled 10 km/h.
Speed of Jill is greater than Scott
Explanation:As we know that
Speed = Distance / Time
So speed of Jill is = 5 / 0.5 since 30 minutes = 0.5 hours
Speed of Jill = 10 km/hour
And
speed of Scott is = 10 / 0.5
Speed of Scott = 20 km/min
Here we can see that speed of Scott is greater than Jill
Cereal plants gain chemical potential energy as they grow. Which form of energy is converted to create the chemical potential energy? A. gravitational potential energy B. kinetic energy C. light energy D. thermal energy
Answer:
C. light energy
Explanation:
In all these plants the energy is converted from the photosynthesis process. As per this photosynthesis phenomenon plants get energy by the light received from the sun.
This will help to make the plants to grow and make fruits in the plant.
in this word photosynthesis we can see it is combination of photo + synthesis
which clearly means that this energy synthesis is with the help of photons received from the sun.
These photons are light photons
So here correct answer will be
C. light energy
Answer:
light energy
Explanation:
A hiker travels in a straight line for 40 minutes with an average velocity that has a magnitude of 1.2 m/s. How far is she from her starting point?
Given:
Time taken for the travel: 40 mins=2400 secs
Velocity: 1.2m/s
Speed and velocity have the same magnitude. Speed is a scalar where as velocity is a vector quantity.
Distance traveled= speed x time.
Distance traveled: 1.2 x 2400=2880m
When a 60 g (=0.06 kg) tennis ball is served by a newly invented machine, it accelerates from zero to 50 m/s. The ball experiences a constant acceleration due to the impact with the racket over a distance of 0.5 m. What is the
here tennis ball is accelerated from initial speed zero to final speed 50 m/s
In this accelerated motion the distance moved by the ball is 0.5 m
So here we can use kinematics to find the acceleration of the ball during this distance
[tex]v_f^2 - v_i^2 = 2 a d[/tex]
here given that
vf = 50 m/s
vi = 0
d = 0.5 m
[tex]50^2 - 0 = 2*a*0.5[/tex]
[tex]2500 m/s^2 = a[/tex]
now if we have acceleration during its motion so we can find the applied force by using Newton's II law
[tex]F = ma[/tex]
[tex]F = 0.06*2500[/tex]
[tex]F = 150 N[/tex]
now the applied force will be 150 N on the ball by racket
A projectile is launched horizontally east at a speed of 29.4 M/s towards a wall 88.2 m away. What is the velocity of the projectile at the moment it strikes the wall?
A. 29.4 m/s down
B. 29.4 m/s east
C. 29.4 m/s at 45(degrees) down from horizontal toward the east
D. 41.6 m/s at 45(degrees) down from horizontal toward the east
Time before projectile hits wall
= 88.2 m / 29.4 m/s = 3 seconds
Vertical velocity of projectile after three seconds
= 3*9.8 = 29.4 m/s
Horizontal velocity of projectile after three seconds, assuming no air resistance
= 29.4 m/s (given)
Conclusion:
velocity of projectile when it hits the wall
= < 29.4, -29.4> m/s
= sqrt(29.4^2+29.4^2) m/s east-bound at 45 degrees below horizontal
= 41.58 m/s east-bound at 45 degrees below horizontal.
Final answer:
The projectile's velocity when it strikes the wall is a combination of its initial horizontal velocity and the vertical velocity it gains due to gravity. The horizontal velocity remains constant at 29.4 m/s east, but the final velocity also includes a downward vertical component due to gravity. The exact final velocity would require calculating the vertical component at impact but is not simply 29.4 m/s east.
Explanation:
The question is a classic example of a projectile motion problem in physics, specifically dealing with a projectile launched horizontally. The key concept here is that horizontal motion and vertical motion are independent of each other. Since the projectile is launched horizontally at a speed of 29.4 m/s without any initial vertical component, this speed will not change throughout its flight because horizontal velocity remains constant when neglecting air resistance. The vertical motion of the projectile, however, is influenced by gravity, which causes it to accelerate downwards at 9.8 m/s2.
To find the velocity at the moment it strikes the wall, we need to separately consider the horizontal and vertical components of velocity. The horizontal component remains 29.4 m/s east, as stated. To find the vertical component, we need to calculate the time it takes for the projectile to reach the wall. This is done by dividing the horizontal distance by the horizontal velocity (time = distance / velocity = 88.2 m / 29.4 m/s).
Without calculating the exact time here, it's important to understand that by the time it hits the wall, the projectile has gained a vertical velocity component due to gravity. The final velocity is a vector combination of the horizontal and vertical components. Therefore, the answer is not simply 29.4 m/s east, as that disregards the vertical component. The exact answer would involve calculating the vertical velocity at the time of impact and then combining it with the horizontal velocity to find the magnitude and direction of the final velocity vector. Options A, C, and D involve assumptions or calculations not fully provided here, but the question's premise indicates that the projectile's velocity upon impact is a combination of both horizontal and vertical components.
The force it would take to accelerate a 700-kg car at a rate of 5m/s2 is
mass of car =700kg
Required acceleration =5m/s^2
According to newton's second law
F=ma
F=(700)(5)
F=3500 Kgm/sec^2
Answer:3500
Explanation: mass of car =700 kg
Required acceleration =5 m/s^2
According to newton's second law
F=ma
F=(700)(5)
F=3500 K gm/sec^2
A racing car whose mass is 1.2 X 10^3 kg is travelling at 8.9 m/s. It stops with a constant deceleration in a distance of 1.8X10^1 m. What force must the brakes apply to the car if the friction in the car’s engine is 1.8 X 10^3 N.
given that initial speed of the car is
[tex]v_i = 8.9 m/s[/tex]
now after travelling the distance d = 1.8 * 10^1 m the car will stop
so here we can use kinematics to find the acceleration of car
[tex]v_f^2 - v_i^2 = 2 a d[/tex]
[tex]0 - 8.9^2 = 2 a d[/tex]
here we have
[tex]- 79.21 = 2*(18)*a[/tex]
[tex]a = -2.2 m/s^2[/tex]
net force applied due to brakes of car is given by Newton's II law
[tex]F = ma[/tex]
here we have
mass = 1.2 * 10^3 kg
[tex]F_{net} = 1.2 * 10^3 * 2.2[/tex]
[tex]F_{net} = 2.64 * 10^3 N[/tex]
now we can say
[tex]F_{net} = F_1 + F_2[/tex]
[tex]2.64 * 10^3 = 1.8 * 10^3 + F_2[/tex]
[tex]F_2 = 8.4 * 10^2 N[/tex]
So the force applied due to brakes is given as above
A cheetah can go from the state of rest to running at 20m/s in just two seconds. What is the Cheetahs average acceleration
acceleration = change in velocity/change in time
so...
a = 20 m/s / 2 seconds
a = 10
hope that helps :)
P.S. found this from Brainly User, sometimes all you have to do is search to find the answer.
Just before snapping backup in the air, my speed is 50m/s. What is my kinetic energy just before snapping back up
Kinetic energy of anything is (1/2) (mass) (speed)² .
Your kinetic energy just before you snap back up (? ?) is
(1/2) (your mass in kilograms) (50 m/s)² =
(1/2) (your mass in kilograms) (2,500 m²/s²) =
(1,250 x your mass in kilograms) . The unit is Joules.
What moon phase occurs 3-4 days after a waning gibbous?
The "waning gibbous" begins immediately after the Full Moon and lasts about a week.
At the end of the week, the moon is no longer gibbous, but it's still waning. At the instant it's exactly half-illuminated, it's called "Third Quarter", and then it continuous to wane for another week.
So 3 to 4 days after the END of the waning gibbous phase, it's a Waning Crescent. It still has another 3 to 4 days of waning to go, before it wanes away to nothing and we have the next New Moon.
The waning gibbous phase is the phase between the full and last quarter moon late at night or in the early morning . The waning crescent is the phase that occurs 3-4 days later a waning gibbous.
What is waning gibbous ?The waning gibbous phase is the phase between the full and last quarter moon late at night or in the early morning.
The waning gibbous phase moon appears more than half-lighted but less than the full moon. A full sunset is a time when the full moon rises. The rising time of the waning gibbous moon is late at night.
It looks red like a full moon when it’s near the horizon.
To learn more about the waning gibbous refer to the link ;
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what gas is most abundant greenhouse gas ? a) ozone b) chlorofluorocarbon c) carbon dioxide d) methane e) water vapor
i believe the answer is water vapor
hope this helps
Answer:
WATER VAPOR
Explanation:
I got a 100% on my test
What are graphs used for? Select all that apply.
analyzing what data means
forming experiments
diagram showing the correlation between two quantities
predicting outcomes and patterns
Answer:
analyzing what data means
diagram showing the correlation between two quantities
Explanation:
Graph is the plot of two physical quantities and it describes the relation between both quantities. It gives a specific relation between the two physical quantities which is used to analyze the result.
Thus, the following options are correct,
analyzing what data means
diagram showing the correlation between two quantities
Answer: Analyzing what data means, diagram showing the correlation between two quantities, and predicting outcomes and patterns.
The first, third, and forth.
Which type of friction prevents a pile of rocks from falling apart?
Rolling friction
Kinetic friction
Cohesive friction
Static friction
Answer:
the is answer is Static friction took the test its right.
Explanation:
Please Help Quick
Consider the average speed of a runner who jogs around a track four times. The distance (400m) remains constant for each lap. However, each lap is run 5 seconds slower than the first. The time for each lap increases. The average speed for each lap ______________. This is an example of a(n) _____________ relationship.
A) increases, direct
B) decreases, direct
C) increases, inverse
D) decreases, inverse
Note: If you have a question please do not ask it in the answer section of this question.
(D) decreases, inverse
Average speed of a body is defined as the ratio of the distance traveled to the time taken to travel the distance. The runner runs the same distance of 400 m during each lap but takes 5 seconds more for each lap.
Since [tex]v_a_v_g=\frac{d}{t}[/tex], as time increases, the average speed for each lap increases.
Thus, [tex]v\alpha \frac{1}{t}[/tex] when the distance traveled is the same. This is an example of an inverse proportionality relationship.
What is the weight in pounds of a 7.0 kilogram bowling ball on earth surface
To convert a quantity in kilograms to pounds, you simply multiply by 2.2 lb/kg.
(7 kg)(2.2 lb/kg) = 15.4 lb.
Final answer:
A 7.0 kilogram bowling ball on Earth's surface weighs approximately 15.4 pounds, calculated using the conversion factor where 1 pound is equivalent to 0.4536 kilograms.
Explanation:
To convert the mass of a 7.0 kilogram bowling ball to its weight in pounds on Earth's surface, we utilize the fact that 1 pound (lb) is equivalent to 0.4536 kilograms (kg) on Earth.
The conversion from kilograms to pounds can be calculated using the ratio method:
Mass in kilograms / 0.4536 kg = Mass in poundsTherefore, for a 7.0 kg bowling ball:
7.0 kg / 0.4536 kg/lb ≈ 15.4324 lbThus, a bowling ball with a mass of 7.0 kg on Earth's surface has an approximate weight of 15.4 pounds.
what does pascals principle state
Pascal's law (also Pascal's principle or the principle of transmission of fluid-pressure) is a principle in fluid mechanics that states that a pressure change occurring anywhere in a confined incompressible fluid is transmitted throughout the fluid such that the same change occurs everywhere.
Answer: The pressure at two pistons within an enclosed fluid system is always the same.
Explanation:
Consider a brick that is totally immersed in water, with the long edge of the brick vertical. The pressure on the brick is
A) greatest on the sides of the brick
B) greatest on the top of the brick
C) greatest on the bottom of the brick
D) greatest on the face with the largest area
E) the same on all surfaces of the brick
Explain your answer
The answer is C because only the bottom has the water pressure applied to it because it's the only thing emersed in the water.
The pressure on a brick that is totally immersed in water, with the long edge of the brick vertical is: C. greatest on the bottom of the brick.
Pressure can be defined as a measure of the external force acting upon a surface area. Mathematically, the pressure acting on an area is given by the formula:
[tex]Pressure = \frac{Force}{Area}[/tex]
In this scenario, the pressure on the brick with a long, vertical edge, that is totally immersed in water is greatest on its bottom because the long, vertical edge displaces water.
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A 32.5-kg rock is traveling at a constant velocity through space. Then a force of 140 N is exerted on the rock. What acceleration does the force produce?
3.31 m/s^2
2.32m/s^2
4.31 m/s^2
45.5 m/s^2
10.7 m/s^2
As per Newton's II law we can say force applied on an object is product of mass and acceleration
[tex]F = ma[/tex]
given that
Force = 140 N
mass = 32.5 kg
now we can use above formula
[tex]140 = 32.5* a[/tex]
[tex]a = \frac{140}{32.5}[/tex]
[tex]a = 4.31 m/s^2[/tex]
so its acceleration must be 4.31 m/s^2
As you climb a high mountain, the buoyant force exerted on you by the atmosphere _____.
A tornado lifts a truck 252 m above the ground ñ. As the storm continues, the tornado throws the truck horizontally. It lands 560 m away from where it was picked up. How fast was the truck traveling horizontally through its fight? Round your answer to the nearest tenth.
i think its 200 i hope that helps
Answer:
78.1 m/s
Just took it.
Explanation:
A 47-kg packing crate is pulled with constant speed across a rough floor with a rope that is at an angle of 37 degrees above the horizontal. If the tension in the rope is 142 N, how much work is done on the crate to move it 6.1m?
Tension in the rope due to applied force will be given as
[tex]F = 142 N[/tex]
angle of applied force with horizontal is 37 degree
displacement along the floor = 6.1 m
so here we can use the formula of work done
[tex]W = F d cos\theta[/tex]
now we can plug in all values above
[tex]W = 142 * 6.1 * cos37[/tex]
[tex]W = 691.8 J[/tex]
So here work done to pull is given by 691.8 J