The area of a sound wave where particles are spread apart is called a _________________________.
About how often does a 1-kilometer object strike the earth? about how often does a 1-kilometer object strike the earth? every year every million years every billion years
A piano tuner stretches a steel piano wire with a tension of 1000 n. the wire is 0.5 m long and has a mass of 5 g. what is the number of the highest harmonic that could be recorded by a computer that is capable of sensing frequencies up to 10,000 hz
Answer: 1. B) 720 N
2. D) 2500 m
3. D) 408 Hz
4. C) 4m
5. A) 246 hz
6. D) 31st
7. B) the frequency of the sound is 100 Hz
8. C) 0.78 m
9. B) 16 Hz
10. B) 311 m/s
9. How does the length of the hypotenuse in a right triangle relate to the lengths of the legs? (2 points)
Open ended/Short answer question
Answer:
hypotenuse² = base² +height²
Explanation:
Let us suppose a right angled triangle having b as base, h as hypotenuse and p as perpendicular distance.
The relation between the length of legs, the base and the hypotenuse is called Pythagoras theorem. It is given by :
[tex]h^2=b^2+p^2[/tex]
or
hypotenuse² = base² +height²
Answer:
The relation between the length of the hypotenuse in a right triangle and lengths of the legs is [tex]H^{2} = p^{2}+b^{2}[/tex].
Explanation:
The legs of right angled triangle is also known as perpendicular and base respectively.
Let p be length of perpendicular and b be the length of base. Then by Pythagoras theorem,
[tex]H^{2} = p^{2}+b^{2}[/tex]
here, H is the length of Hypotaneous.
Thus, relation between the length of the hypotenuse in a right triangle and lengths of the legs is [tex]H^{2} = p^{2}+b^{2}[/tex].
For more details, refer to the link:
https://brainly.com/question/23936129?referrer=searchResults
A climate which changes with altitude is called a(n) climate.
Two point charges of equal magnitude are
7.5 cm apart. At the midpoint of the line
connecting them, their combined electric field
has magnitude of 45 N/C. Find the magnitude
of the charges.
Pls show me the complete calculation,
Match the boundary with its characteristic
1. Convergent
2. Divergent
3. Transform
A. Along strike-slip faults
B. Along ocean ridges
C. Compression,
An element's atomic number is 16. How many electrons would an atom of this element have?
Force = mass x acceleration
What force would be required to accelerate a 40 kg mass by 4 m/s2?
160
160 N
10 N
10
What is the magnitude of B?
speed=2.64*10^7
radius .160m
R=mv/|q|B,
What kind of gas cloud is most likely to give birth to stars? what kind of gas cloud is most likely to give birth to stars? a cold, dense gas cloud a hot, dense gas cloud a hot, low-density gas cloud a cold, low-density gas cloud?
on the surface of planet x a body with a mass of 10 kilograms weighs 40 newtons. The magnitude of the acceleration due to gravity on the surface of planet X is
Why does the total amount of energy before and after any energy transformations remain the same?
answer : Because energy cannot be created or destroyed, the total input is equal to the total output. The total amount of energy remains the same even though it may change forms.
Energy cannot be created nor be destroyed. But it can change from on from one form to the other. The total energy in a system always remains a constant.
What is conservation of energy?
According to the law of conservation of energy, energy can neither be created nor be destroyed. Therefore, the total energy of a system remains constant.
However, one form of energy can be converted to other form. There are different kinds of energy generating from different sources. Kinetic energy, potential energy, nuclear energy, gravitational energy, thermal energy, chemical energy, light energy etc. are different forms of energy.
In battery or cell the chemical energy is converted to electrical energy. Similarly in a solar cell light energy is converted to electrical energy. Whereas, in all electrical devices such as fan, motors, etc electrical energy is converted to the mechanical energy.
In this way the total energy of the system is always maintained on itself without any loss or gain in amount. Therefore, the total amount of energy before and after any energy transformations remain the same to balance the system.
To find more about energy transformations, refer the link below:
https://brainly.com/question/8210521
#SPJ5
A certain instant camera determines the distance to the subject by sending out a sound wave and measuring the time needed for the wave echo to return to the camera. how long would it take the sound wave to return to the camera if the subject were 3.42 m away? the speed of sound is 343 m/s. answer in units of s.
The time it would take for the sound wave to travel to a subject 3.42m away and back, with a sound speed of 343 m/s, is approximately 0.01995 seconds.
Explanation:The time it takes for the sound wave to return to the camera can be found by applying the equation distance = speed * time. This principle is often utilized in technologies such as sonar and ultrasound imaging. Here the distance is doubled since the sound has to travel to the subject and back to the camera. If the subject is 3.42 m away, the total distance covered by the sound wave is 3.42m * 2 = 6.84m. Given that the speed of sound is 343 m/s, we can rearrange the equation to solve for time: time = distance/speed. Hence, time = 6.84m / 343 m/s = 0.01995 s, rounded to 5 decimal places.
Learn more about Travel Time of Sound Waves here:
https://brainly.com/question/16703598
#SPJ12
It takes 0.02 seconds for the sound wave to return to the camera if the subject were 3.42 metres away.
The given question can be solved by simple use of kinematic equations. It is given that the camera determines the distance to the subject by sending out a sound wave. The speed of the sound wave is v = 343 m/s
Now, for a subject at a distance of 3.42 metres away the sound wave has to travel to the subject and travel back to the camera as well. Therefore the total distance covered by the sound wave will be twice the distance of the subject from the camera.
d = 2 × 3.42 m = 6.84 m
From the kinematic equation;
[tex]v = \frac{d}{t}[/tex], where t = time taken
rearranging for t, we get:
[tex]t = \frac{d}{v}[/tex]
substituting the values,
[tex]t = \frac{6.84 m}{343 m/s}[/tex]
or, t = 0.019 s ≈ 0.02 s
A certain radio wave has a frequency of 2.0 x 10^6 Hz. What is its wavelength?
Can someone help me solve this??
What is the mass of a rock that weighs 49 newtons?
The mass of the rock is equal to 5 Kg when its weight is 49 N.
What is the weight of the object?The weight of a body can be described as the force acting on the body due to gravity. Weight can be described as a vector parameter if gravity is acting on the object.
The S.I. unit for measurement weight is of force, which S.I. is the newton (N). A body with a mass of 1 kg has a weight of about 9.8 Newton on the surface of the Earth, and about 1/6 as much on the Moon.
The mathematical expression to find the weight of an object is written as follows:
W = mg
Given the weight of the rock, W = 49 N
The acceleration due to gravity on the rock, g = 9.8 m/s²
The mass of the rock on the earth will be equal to:
49 = m × 9.8 m/s²
m = 5 kg
Therefore, the mass of the rock is equal to 5 kg.
Learn more about weight, here:
brainly.com/question/13040516
#SPJ6
What’s the units of specific heat
Final answer:
The units of specific heat, which indicate the amount of energy needed to raise the temperature of 1 g of a substance by 1°C, are joules per kilogram Kelvin (J/(kg·K)) or joules per kilogram degree Celsius (J/(kg·°C)) in the SI system, and calories (cal) in non-SI units.
Explanation:
The units of specific heat are an important aspect in understanding how much energy is required to change the temperature of a substance. The specific heat of a substance is the amount of energy needed to increase the temperature of 1 gram of the substance by 1°C. In the International System of Units (SI), the unit of specific heat is joules per kilogram Kelvin (J/(kg·K)) or joules per kilogram degree Celsius (J/(kg·°C)). Additionally, the non-SI unit called the calorie (cal) is sometimes used, where 1 calorie is the energy required to raise the temperature of 1 gram of water by 1°C.
It's important to note that the value of specific heat remains the same whether measured in J/(kg·K) or J/(kg·°C), since the temperature change is the same whether expressed in Kelvin or degrees Celsius. For practical and historical reasons, other units like the calorie and the kilocalorie (kcal) are also used, particularly in contexts like food energy where 'calories' commonly refer to kilocalories.
Two circuits have identical voltage sources. The only other elements in the circuits are resistors. The resistor in circuit A has a resistance that is four times as large as the resistance of the resistor in circuit B (RA = 4RB ). Which statement below best describes the current flowing through the two circuits? (Ohm's law: V = IR) A. The current flowing through circuit A is as large as the current flowing through circuit B. B. The current flowing through circuit A is 2 times as large as the current flowing through circuit B. C. The current flowing through circuit A is 4 times as large as the current flowing through circuit B. D. The current flowing through circuit A is as large as the current flowing through circuit B.
Final answer:
According to Ohm's law, since circuit A has a resistor four times larger than circuit B and both have identical voltage sources, the current in circuit A is one fourth as large as in circuit B.(Option D)
Explanation:
If two circuits have identical voltage sources and resistors and the resistance in circuit A is four times as large as the resistance in circuit B (RA = 4RB), we can apply Ohm's law (V = IR) to determine the relationship between the currents in each circuit. Since the voltage (V) across both circuits is the same, and the resistance (R) is four times higher in circuit A compared to circuit B, the current in circuit A will be four times smaller than the current in circuit B. Ohm's law rearranged to solve for current (I) is I = V/R.
Therefore, with a higher resistance in circuit A, the current is inversely proportional to the resistance. Hence, the correct statement is:
The current flowing through circuit A is one fourth as large as the current flowing through circuit B (Option D).
An automobile engine delivers 47.4 hp. how much time will it take for the engine to do 6.82 × 105 j of work? one horsepower is equal to 746 watts. answer in units of s.
A student throws a ball straight down off a very high building with a velocity magnitude of 3.0 m/s the ball accelerated in free fall for 2.0s what is the velocity at 2.0s
After being thrown downwards from a high building with an initial velocity of 3.0 m/s, and accelerating in free fall for 2.0s, the velocity of the ball would be 22.6 m/s.
Explanation:The student throws a ball downwards with an initial velocity of 3.0 m/s. In a situation of free fall, the object accelerates due to gravity, which is approximately 9.8 m/s² on Earth's surface. As the ball is being thrown downwards, the gravitational acceleration would add to the initial velocity.
We can use the equation v = u + at to find the velocity of the ball after a certain time where:
v = final velocity
u = initial velocity
a = acceleration
t = time
The initial velocity (u) here is 3.0 m/s, acceleration (a) is 9.8 m/s² (as the object is in free fall), and time (t) is 2.0s (as given).
So substituting these values in the equation, we get:
v = 3.0 m/s + (9.8 m/s² * 2.0s) = 3.0 m/s + 19.6 m/s
This sums up to a final velocity (v) of 22.6 m/s. Therefore, the ball's velocity after 2.0 seconds is 22.6 m/s.
https://brainly.com/question/30395171
#SPJ12
What is the strength of an electric field that will balance the weight of a 8.2 g plastic sphere that has been charged to -3.3 nC? Answer in N/C.
Approach: I know that the forces need to balance out, and that F=mg (mass*gravity) and that F=q*E (charge* electric field).
mg=qE
E=mg/q
Plugging in the numbers:
m = 8.2*10^-3 kg
q = -3.3*10^-9 C
g = 9.8*10^-3 N/g
And I get -24351.5152, but it's wrong. I know there is some error with the units, could someone show me what I am doing wrong?
You and friend run up a fight of stairs that is 30 m high. Both of you reach the top in 12 seconds. Your weight is 570 N and your friend weights 620 N. Which of you has more power? Show all work
The cube has a mass of 72.9 g. What substance is this cube composed of?
Which activity involves using fossil fuels directly or indirectly? 1)eating fresh fruit for a snack 2)cooking hot dogs on a campfire 3)using crayons to color 4)walking to school
On a fishing trip, Rebecca catches a fish that she has never seen before. What characteristics should she look at to determine which of the three main groups of fish her catch belongs to? What would she find if the fish is a bony fish?
Select the correct answer. Julie is cycling at a speed of 3.4 meters/second. If the combined mass of the bicycle and Julie is 30 kilograms, what is the kinetic energy? 1.7 × 102 joules 1.5 × 102 joules 2.0 × 102 joules 2.2 × 102 joules
Kinetic energy of a moving body can be calculated from mass and velocity. The kinetic energy of the cycler with a velocity of 3.4 m/s and mass of 30 Kg is 173 J or 1.7 × 10² joules.
What is kinetic energy?Kinetic energy is form of energy formed by virtue of the motion of a body. It is directly proportional to the mass and square of the velocity of the body. The equation of kinetic energy can be written as follows:
KE = 1/2 mv²
When a body starts to move its kinetic energy starts to increase whereas, potential energy gets declined. As per the above relation, the kinetic energy of a body doubles when the mass is doubled. If the velocity is doubled, kinetic energy will increases by four times.
It is given that the combined mass of the cycle and the girl is 30 Kg and the velocity is 3.4 m/s. Kinetic energy can be calculated as follows:
KE = 1/2 30 × ( 3.4 )²
= 173 J.
Therefore, kinetic energy of the cycler with a velocity of 3.4 m/s and mass of 30 Kg is 173 J or 1.7 × 10² joules and option a is correct.
To find more about kinetic energy, refer the link below:
https://brainly.com/question/12669551
#SPJ5
A point charge of +1.0 µC is moved in the direction of an electric field, and it has a change in electric potential difference energy of 10.0 J. What was the change in electric potential difference? 1 µC = 10^-6 C
1.0 × 108 V
1.0 × 107 V
+1.0 × 107 V
+1.0 × 108 V,
Which part of the carbon cycle is leading to coral bleaching? photosynthesis in plants respiration in plants absorption of carbon dioxide into the oceans
Answer: Option C
Explanation: The carbon dioxide is major green house gas that traps heat. But due to global warming the amount of carbon dioxide in the environment is increasing day by day.
The carbon dioxide gets in the ocean water and harms the organisms present in the ocean water. The coral present inside the water covers a very large area and is a major part of the marine ecosystem.
The carbon dioxide in excess leads to coral bleaching. This is a phenomenon in which the algae that is found inside the coral leaves the coral due to stress condition.
Thus, carbon dioxide in water increase the acidification in ocean which leads to coral bleaching.
Many of our behaviors are adopted as a product of our _____.
A TV shows
B radio
C environment
D friends
A 33.0 g iron rod, initially at 22.7 ∘c, is submerged into an unknown mass of water at 63.3 ∘c, in an insulated container. the final temperature of the mixture upon reaching thermal equilibrium is 58.5 ∘c. part a what is the mass of the water? express your answer to two significant figures and include the appropriate units.