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What is the ratio of the new kinetic energy to the original kinetic energy of a moving car when the ratio of the new speed to the original speed is 1/7?
Light traveling in air is incident on the surface of a block of plastic at an angle of 61.0degree to the normal and is bent so that it makes a 46.5 degree angle with the normal in the plastic. Find the speed of light in the plastic.
A giraffe has a large blood vessel running down its leg. This blood vessel descends 2.5 m from the heart. The radius at its upper end is 0.5 cm, What is the pressure at the lower end
A 74.0 kilogram man stands on a scale in an elevator. Obtain the apparent weight when the elevator is moving upward at a constant speed
A beam of unpolarised light with a power of 70 mW is passed through two polarisers in series, with their polarisation directions parallel to each other. What is the maximum power that can be transmitted through the two
Determine the acceleration of the bullet while in the barrel? A bullet in a rifle barrel does not have constant acceleration, but constant acceleration is to be assumed for this problem.
question1two dogs pull horizontally on ropes attached to a post angle problem 1 between the ropes is 60.0 degrees. if
Two small spheres hang in equilibrium at the bottom ends of threads, 40.0 cm long, that have their top ends tied to the same fixed point. Find the distance between the centers of the spheres
A 3000 kg truck traveling north at 30 km/h turns east and accelerates to 48 km/h. What is the change in the truck's kinetic energy
A He-Ne laser (lambda = 633 nm) is passed through a diffraction grating 1.25 m from a screen. Determine the number of lines per mm for the grating
The prong of the tuning fork moves back and forth when it is set into vibration. what is the frequency of the tuning fork
A disk rotates with constant angular acceleration. The initial angular speed of the disk is 2 rad/s. After the disk rotates through 1 Radians, the angular speed is 17rad/s. What is the magnitude of the angular acceleration?
Suppose the moon were held in its orbit not by gravity but by the tension in a massless cable. What is the speed of the moon in its orbit about the earth
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