Explanation:
Given that,
Area of large piston, [tex]A_1=250\ cm^2[/tex]
Area of small piston, [tex]A_2=25\ cm^2[/tex]
Force applied to large piston, [tex]F_1=m_1g=1500\times 10=15000\ N[/tex]
It is required to find the force applied to the small piston. The pressure in each chamber must be equal so, that,
[tex]\dfrac{F_1}{F_2}=\dfrac{A_2}{A_1}[/tex]
F₂ is force applied to smaller piston
[tex]F_2=\dfrac{F_1A_1}{A_2}\\\\F_2=\dfrac{15000\times 250}{25}\\\\F_2=150000\ N\\\\F_2=150\ kN[/tex]
So, the force of 150 kN must be applied to the small piston.
To raise the car using a hydraulic lift, a force of 1500 N must be applied to the small piston.
Explanation:To determine the force needed to raise a car using a hydraulic lift, we can apply the principles of Pascal's law. According to Pascal's law, the pressure in a fluid is transmitted equally in all directions. In this case, the pressure exerted on the larger piston is equal to the pressure exerted on the smaller piston. We can use the equation:
F1/A1 = F2/A2
Where F1 is the unknown force applied to the small piston, A1 is the cross-sectional area of the small piston, F2 is the weight of the car (mg), and A2 is the cross-sectional area of the large piston.
Given that A1 = 25 cm^2, A2 = 250 cm^2, and the mass of the car is 1500 kg, we can solve for F1:
F1 = (F2 * A1) / A2
Substituting the known values:
F1 = (1500 kg * 9.8 m/s^2 * 0.0025 m^2) / 0.025 m^2 = 1500 N.
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Sound waves are longitudinal waves. The height or intensity of the wave shows it's amplitude or the energy in the wave. In the diagram of a sound wave, the section labeled D shows the area of the sound wave with the
A) most amplitude and most compression.
B) most amplitude and most rarefaction.
C) least amplitude and most compression.
D) least amplitude and most rarefaction.
Answer:
most amplitude and compression .
Explanation:
19. Find the recoil velocity of a 65 kg ice hockey goalie who
catches a 0.15 kg hockey puck slapped at him at a
velocity of 50 m/s. Assume that the goalie is at rest
before catching the puck, and friction between the ice
and the puck-goalie system is negligible.
a. -0.12 m/s
b. O m/s
C. 0.12 m/s
d. 7.5 m/s
Answer:
c. 0.12 m/s
Explanation:
by using momentum formula [tex]v_2=\frac{m_1\times v_1}{m_1+m_2}[/tex]
we get
[tex]v_2=\frac{0.15\times 50}{0.15+65}=0.12[/tex]
The recoils velocity of the puck-goalie system would be 0.12 meters/second, therefore the correct answer is option C.
What is momentum?It can be defined as the product of the mass and the speed of the particle, it represents the combined effect of mass and the speed of any particle, and the momentum of any particle is expressed in Kg m/s unit.
As given in the problem we have to find the recoil velocity of a 65 kg ice hockey goalie who catches a 0.15 kg hockey puck slapped at him at a velocity of 50 m/s. Assume that the goalie is at rest before catching the puck, and friction between the ice and the puck-goalie system is negligible.
By using the conservation of the momentum,
The velocity of the recoil = 0.15*50 / (0.15+65)
=0.12 meters / second
Thus, the recoil velocity of a 65 kg ice hockey goalie would be 0.12 meters /second, therefore the correct answer is option C.
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PLEASE ANSWER ASAPPP!!!!!
Ingrid hangs a black shirt on the clothesline to dry. After a few hours, she removes the black shirt from the clothesline and notices that it feels hot. What causes the black shirt to feel hot? How does molecular motion change when the black shirt gets hot?
EXPLAIN!!!
Answer:
The molecular motion starts to speed up when the black shirt becomes hot. because the light that absorbed from the black shirt gets converted to heat, and then absorbed by the shirt.
Explanation:
Which statement best summarizes Newton's law of action-reaction? *
Friction slows objects.
All forces act in pairs.
Force equals mass times acceleration.
O
An object in motion tends to stay in motion.
Answer:
The correct answer is the third
Force equals mass times acceleration
Explanation:
Newton's second law says that force equals mass times the acceleration of the body
F = m a
This is the most used way to solve problems
The correct answer is the third
Newton's third law states that forces always work in pairs, by action and reaction
Newton's first law states that an object per macerate with constant speed unless some force modifies this state.
What are the products in the photosynthesis equation?
A) 02 and energy
B) CO2 and 02
C) Glucose and 02
D) 02 and sunlight
Answer:
C
Explanation:
How are an engineer and a carpenter different
Answer:
engineers plan, carpenters do the manual work
Explanation:
engineers plan and sketch out the blueprint, while carpenters do the cutting, shaping and fastening of wood material, carpenters do the construction and repair
Answer:
The engineers do most of the planning and sketching of the plan, While a carpenter's job is to perform work entailing the cutting, shaping, and fastening of wood or material such as fiberboard that is treated as wood.
Explanation:
Carpenters perform the two principal jobs of construction and repair. Other then an engineer.
What were the provisions of the 1973 Vietnam War cease-fire?
Check all of the boxes that apply.
The United States would return its prisoners of war.
The United States would allow South Vietnam to decide its own future.
Communist forces would return their prisoners of war.
The United States would keep troops in Vietnam.
Communist forces would not send more soldiers to South Vietnam,
Answer:
BCE
Explanation:
The provisions of the 1973 Vietnam War cease-fire are
The United States would allow South Vietnam to decide its own future.Communist forces would return their prisoners of war.Communist forces would not send more soldiers to South Vietnam.What is Vietnam located?Vietnam is a country located in the southeast Asian region on the Indochinese peninsula. It was under french colonial rule rule since 19th century.
Given are the provisions of the 1973 Vietnam War cease-fire.
The provisions of the 1973 Vietnam War cease-fire are
The United States would allow South Vietnam to decide its own future.Communist forces would return their prisoners of war.Communist forces would not send more soldiers to South Vietnam.Therefore, the provisions of the 1973 Vietnam War cease-fire are
The United States would allow South Vietnam to decide its own future.Communist forces would return their prisoners of war.Communist forces would not send more soldiers to South Vietnam.To solve more questions on Vietnamese war, visit the link below -
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If it takes 520 joules of work to move an object 10 meters, what force was needed? A. 51 N B. 510 N C. 530 N D. 52 N
Answer:
52
Explanation:
W = F x s
520 = F x 10
F = 520 ÷ 10
Explain Einstein's General Relativity Theory.
Answer:
The general theory of relativity (or general relativity for short) is a major building block of modern physics. It explains gravity based on the way space can 'curve', or, to put it more accurately, it associates the force of gravity with the changing geometry of space-time.
Which of the following statements is true concerning mechanical waves and electromagnetic waves?
A
Both electromagnetic waves and mechanical waves require a medium to travel through.
B
Mechanical waves require a medium to travel through; electromagnetic waves do not.
C
Electromagnetic waves require a medium to travel through; mechanical waves do not.
D
Neither electromagnetic waves nor mechanical waves require a medium to travel through.
Answer:
B
Explanation:
Electromagnetic spectrum includes visible light which we see all the time reflecting off objects to give them colours, mechanical waves like sound require something to move in, its the reason why people say you can't scream in space because space is a giant vacuum. No not the kind you use to clean up the mess you made from breakfast. The kind that has no air. So sound can be heard on earth as it is not a vacuum, air moves freely and transfers sounds vibrations all around you to be absorbed by walls and other stuff in comes in contact with.
Extra information:
Sound travels further in water because the molecules are closer together meaning that transferring the energy is easier. This is how Blue wales can communicate from hundreds of miles away.
can a magnet ever have a single pole
Answer:
no
In particle physics, a magnetic monopole is a hypothetical elementary particle that is an isolated magnet with only one magnetic pole (a north pole without a south pole or vice versa). A magnetic monopole would have a net "magnetic charge".
which parts of an electric generator are connected
Answer:
https://brainly.com/question/10256321
Answer:
the armature and commutator
Explanation:
True or False? When vinegar is added to baking soda, the temperature decreases slightly. This is a sign that there was a chemical reaction.
Group of answer choices
True
False
Answer:
true
Explanation:
Answer:
this would be be true but of the ingredients in it.
a person run 21.0 km west then runs 10.0 km east what is the persons distance
Answer:
31.0 km
Explanation:
21.0+10.0=31.0 km
Answer:
Distance from starting point = 11 km, Distance ran altogether = 31 km
Explanation:
21 - 10 = 11
21 + 10 = 31
What is the magnitude of the electric field at a point 0.0050 m from a 0.0040
C charge?
Use E = kg and k = 9.00 x 10°N.m/c?
A. 1.4 x 1072 N
B. 2.8 1012 N
C. 1.1 x 1010 N
D. 7.2×10°N
Answer:
A. 1.4 * 10^(12) N/C
Explanation:
Parameters given:
Distance of charge from electric field, r = 0.0050 m
Charge, q = 0.0040 C
The electric field at a point, r, away from a charge, q, is given as:
E = (k * q) / r²
Where k = Coulomb's constant
E = (9 * 10^9 * 0.004) / (0.005²)
E = 1440 * 10^9 = 1.4 * 10^(12) N/C
The magnitude of the electric field at a point 0.005 m from the charge is 1.4 * 10^(12) N/C.
Answer:
Explanation:
Given that,
A charge Q = 0.004 C
We want to find the electric field at distance r = 0.005m
K = 9 × 10^9 Nm²/C²
Electric field at a point is given as
E = kQ / r²
E = 9 × 10^9 × 0.004 / 0.005²
E = 1.44 × 10¹² N/C
So, the magnitude of the electric field at 0.005m is 1.44 × 10¹² N/C.
A toy consists of two identical spheres connected by a string with negligible mass. The toy is thrown at an angle above the horizontal such that the string remains taut and both sphere are revolving counterclockwise in a vertical plane around the center of the string.
when the toy was released, the center of the string was moving with an initial speed of 15m/s at a 60 degree angle above the horizontal. What is the speed of the center of the string at the instant when the string reaches the top of its trajectory?
Answer:
7.5 m/s
Explanation:
The center of the string is a single point following projectile motion. At the top of its trajectory, the vertical component of the velocity is 0 m/s. In the horizontal direction, assuming negligible air resistance, the acceleration is 0 m/s², so the horizontal velocity is the same as the x component of the initial velocity. Therefore, the net speed of the center of the string is equal to the initial horizontal component of the velocity.
v = vₓ = 15 m/s cos 60° = 7.5 m/s
At the top of the trajectory, the speed of the center of the string is the same as the initial horizontal velocity, which is 7.5 m/s. This is because the vertical component of the velocity becomes zero while the horizontal component remains unchanged. Thus, the speed of the center of the string is 7.5 m/s.
To determine the speed of the center of the string at the top of its trajectory, we need to consider the initial conditions and the influence of gravity on the projectile motion.
The toy is thrown with an initial speed of 15 m/s at an angle of 60 degrees above the horizontal. We can break this down into horizontal and vertical components:
Initial horizontal velocity: v_x = v_0 cos(θ) = 15 m/s x cos(60°) = 7.5 m/sInitial vertical velocity: v_y = v_0 sin(θ) = 15 m/s x sin(60°) ≈ 13 m/sAt the top of the trajectory, the vertical component of the velocity becomes zero since the toy momentarily stops moving upwards and is about to start descending. The horizontal component, however, remains unchanged as there is no horizontal acceleration acting on it (ignoring air resistance).
Therefore, at the top of the trajectory, the speed of the center of the string is the horizontal component of the initial velocity: 7.5 m/s.
The revolution period for Venus is___days.
121
225
156
212
(PLS ANSWER ASAP)
Answer:
225
Explanation:
The period of rotation of Venus is 243 Earth days, which is longer than the 225 days it takes the planet to orbit the sun. Moreover, the rotation is in the opposite direction from other planets in the solar system.
Answer:
225
Explanation:
A cd player uses a ___ to convert info to an electrical signal
A. Neon light
B. Sodium vapor light
C. Laser
Calculate the mass in kg of an object that weighs 1,225 N on earth
To calculate the mass of an object that weighs 1,225 N on Earth, divide the weight by the acceleration due to gravity (9.80 m/s²). The mass is equal to 125 kg.
Explanation:To calculate the mass of an object that weighs 1,225 N on Earth, we can use the equation w = mg, where w is the weight, m is the mass, and g is the acceleration due to gravity (9.80 m/s² on Earth).
Rearranging the equation, we have m = w/g. Substituting the given values, m = 1,225 N / 9.80 m/s² = 125 kg.
Therefore, the mass of the object is 125 kg.
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Betty made a simple electromagnet using just a battery and a wire. What could Betty do to increase the strength of her
electromagnet?
Answer:
Coil the wire around a nail.
Explanation:
If Betty wants to increase the strength of the electromagnet, she should coil the wire around an object that conducts electricity. Plastic, paper, and glass do not conduct electricity, so Betty should coil the wire around a nail.
Answer:
Coil the wire around a nail.
Help ASAP, will give brainliest!!!
A student is helping his mom make sweet tea. She wants the tea to be very sweet and very strong. The student knows how to alter solutes so that they will dissolve better and faster.
Which of the following conditions would help make the sweet tea faster?
I. using sugar cubes with less surface area
II. using granulated sugar with greater surface area
III. using hot water
IV. using cold water
V. allowing to sit
V1. stirring vigorously
A. I, III, and VI
B. I, III, and V
C. II, III, and VI
D. I, IV, and V
Answer:
C
Explanation:
Greater surface area will allow the sugar to dissolve faster. Stirring and hot water will also help dissolve the sugar faster.
Answer:
D
Explanation:
stirring temperature small particle size
A spoonful of oil has poor solubility in water. Would a cup of oil dissolve into water?
Answer:
No
Explanation:
The density of the oil is different from the density of the water.
A block is sitting on a platform 20 m high. It weighs 50 kg. How much potential energy does it contain?
Answer:
9806.65 Joules
Explanation:
The block sitting on a platform contains 9,800 Joules of potential energy.
Given the following data:
Height = 20 metersMass of block = 50 kgWe know that acceleration due to gravity (a) for an object is equal to 9.8 meter per seconds square.
To find how much potential energy the block contains:
Mathematically, potential energy (P.E) is calculated by using the following formula:
[tex]P.E = mgh[/tex]
Where:
m is the mass of object. g is the acceleration due to gravity. h is the height of an object.Substituting the given parameters into the formula, we have;
[tex]P.E = 50[/tex] × [tex]9.8[/tex] × [tex]20[/tex]
Potential energy = 9,800 Joules
Therefore, the block contains 9,800 Joules of potential energy.
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What charges must the particles have to create the electric field shown
Correct Option:
X shows positive while Y shows negative charges, create the electric field as shown.
Option: D
Explanation:
The idea of an electric field provides a way to define how starlight travels to enter our eyes across huge distances of empty space.The electric field is a quantity of vectors that is present at any point in space. The electric field at a region shows the force that, if put at that position, will operate upon a positive charge device.
The direction of the electric field points directly at a positive point charge, and straight at a negative point charge. The field direction is implemented to the force direction exert on a positive test charge. It is externally from a positive charge and radially in toward a negative point charge.
A crane motor exerts 3,500.0 W to lift a load up 5 floors in 25.0 seconds. The crane did how much J of work.
Answer:
87,500 J
Explanation:
Power = energy / time
3,500.0 W = E / 25.0 s
E = 87,500 J
hii i need answers for this question. this is due today and i need it asap!! **will give brainlist**
Answer:
Explanation:
the bit the most kinetic energy is where it is going down
the bit with the most potential is the curb
The places with the most potential are the places at the highest points of the track (i.e., right behind where the coaster is situated, and towards the end of the loop). These places have the highest stored energy, that can be used.
The places with the most kinetic is where the low points of the track is at. In this case, it will be where the coaster is situated, and the latter half of the loop.
why do substances with free electrons make the best conductors.
Answer:
when electrons move around they create heat. the freer the molecules the more hear they can produce
The pitch of a sound wave is related to wrich property?
A Wavelength
B. Amplitude
C. Volume
D . Frequency
Answer:
Frequency
Explanation:
11. Which of the following forces is a contact force? *
A. Gravity
B. Friction
C. Magnetism
D. Electricity
Answer:
B
Explanation:
Gravity is an invisible force, and so is magnetism and electricity. Friction involves the rubbing of things together to create energy.
Answer:
B
Explanation:
Friction is the force that you feel whenever you try to drag an object across a surface. Like a box along the floor, or your hand across a counter-top. It requires two objects to be in direct contact with each other (don't worry about air friction AKA "drag").
find the unit of length,mass and time if the unit of force, velocity and energy are respectively 100N,10ms^1and 500J
Answer:
Mass = 5 unit
Length = 5 unit
Time = 0.5 unit
Explanation:
As we know that the units are as following
Force = 100 N
Velocity = 10 m/s
Energy = 500 J
i) For mass we know that
[tex]Force = mass \times \frac{velocity}{time}[/tex]
[tex]100 = mass \times \frac{10}{0.5}[/tex]
[tex]mass = 5 units[/tex]
ii) For length we know that
[tex]Force \times distance = energy/work[/tex]
[tex]100 (d) = 500[/tex]
[tex]Length = 5 units[/tex]
iii) for Time we know that
[tex]Power = \frac{Energy}{time}[/tex]
[tex]Force \times velocity = \frac{Energy}{time}[/tex]
[tex]time = \frac{500}{100\times 10}[/tex]
[tex]Time = 0.5 unit[/tex]