A box weighing 18 N requires a force of 6.0 N to drag it at a constant rate. What is the coefficient of sliding friction?
Answers
The Correct Answer Is 0.33.
Related Questions
The earth is the _____ largest planet.thirdfourthfifthsixth
The least common shape for a galaxy is ______. irregular elliptical cluster spiral spherical
An element's atomic number is 93. how many protons would an atom of this element have? ???? protons
50.0 meters away from a building. Tip of the building makes an angle of 63.0° with the horizontal. What is the height of the building
Heat energy enters the ice/water system.
The temperature of the ice/water system remains constant.Heat energy leaves the ice/water system.
The temperature of the ice/water system decreases.
Answers
It takes heat energy to turn ice at 0°C into water at 0°C.
-- You start off with a block of ice.
-- Some heat energy hits the ice, the ice absorbs it, a little bit
of ice melts, and a puddle forms around it. Now you have an
ice/water system, all at 0°C.
-- If no more heat comes in from somewhere, then no more
ice can melt.
-- When some more heat energy comes in, some more ice
can melt, and become liquid at 0°C.
-- As heat comes in, more and more ice melts. The temperature
of the whole system remains constant. Any heat that comes in
is used to change the state of some ice from solid to liquid, with
no temperature change.
-- Finally, when all of the solid is gone, any more heat energy
begins to raise the temperature of the water.
b. False
Answers
The statement ‘An electromagnet is a strong magnet that can be turned on and off’ is true. The answer is letter A. An electromagnet can be made through wrapping the wire that has an electric current around a nail. It can be increase through the number of loops wrapped around the metal.
Answer:
true
Explanation:
Which star on this diagram is the most similar to the Sun in luminosity and temperature?
Answers
Answer: The answer is 3000 K and Centauri A.
Explanation:
Just did it and got it right ♡´･ᴗ･`♡
Answer:
What is the approximate temperature of the supergiant Betelgeuse?
3000 K
Which star on this diagram is the most similar to the Sun in luminosity and temperature?
Centauri A
Answers
Answer:
Image distance of apple=-6.7 cm
Magnification of apple=0.33
Explanation:
We are given that an apple is placed 20.cm in front of a diverging lens.
Object distance=u=-20 cm
Focal length=f=-10 cm
Because focal length of diverging lens is negative.
We have to find the image distance and magnification of the apple.
Lens formula
Substitute the values then we get
Image distance of apple=-6.7 cm
Magnification=m=
Magnification of apple=
Hence, the magnification of apple=0.33
a. the light will reach the front of the rocket after it reaches the back of the rocket.
b. the light will reach the front of the rocket at the same instant that it reaches the back of the rocket.
c. the light will reach the front of the rocket before it reaches the back of the rocket. 2.) A rocket is moving at 1/4 the speed of light relative to Earth. At the center of this rocket, a light suddenly flashes. To an observer at rest in the rocket
a. the light will reach the front of the rocket before it reaches the back of the rocket.
b. the light will reach the front of the rocket at the same instant that it reaches the back of the rocket.
c. the light will reach the front of the rocket after it reaches the back of the rocket. 3.) An astronaut in an inertial reference frame measures a time interval Δt between her heartbeats. What will observers in all other inertial reference frames measure for the time interval between her heartbeats?
a. Δt
b. less than Δt
c. more thanΔt
d. The answer depends on whether they are moving toward her or away from her. 4.) You are a passenger on a spaceship. As the speed of the spaceship increases, you would observe that
a. the length of your spaceship is getting shorter.
b. the length of your spaceship is not changing.
c. the length of your spaceship is getting longer. 5.) A star is moving towards the earth with a speed at 90% the speed of light. It emits light, which moves away from the star at the speed of light. Relative to us on earth, what is the speed of the light moving toward us from the star?
a. 0.90c
b. 1.9c
c. 1.20c
d. 1.1c e,) c
Answers
(1) b. the light will reach the front of the rocket at the same instant that it reaches the back of the rocket.
(2) a. the light will reach the front of the rocket before it reaches the back of the rocket.
(3) b. less than Δt
(4) c. the length of your spaceship is getting longer.
(5) c. 1.20c
b) frequency
c) amplitude
d)cycle
e) phase
Answers
Answer:
cycle. d
Explanation:
plato