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Two people are standing on a 2.5 m longplatform, one at each end. The platform floats parallel to the ground on a cushion of air, like a hovercraft. One person throws a6.6 kg ball to the other, who catches it. The ball travels nearly horizontally. Excluding the ball, the totalmass of the platform and people is 116 kg. Because of the throw, this 116 kg massrecoils. How far does it move before coming to rest again?
If a hydrogen atom in its ground state is illuminated with em radiation of wavelength 97.44 nm, what is the highest state the electron can be promoted
Draw a picture of a moving source and the waves surrounding it according to what you observed in this experiment. How does the spacing of the wavefronts in front of the source compare to those behind it?
A bird watcher meanders through the woods, walking 0.375 km due east, 1.19 km due south, and 2.48 km in a direction 48.9 ° north of west. find the magnitudes of the bird watchers displacement
The electric field midway between two equal but opposite point charges is 745 N/C, What is the magnitude of the charge on each
An unknown material has a normal melting/freezing point of -26.3 ° C, and the liquid phase has a specific heat capacity of 160 J/(kg · C °). What is the latent heat of fusion of the unknown material
The far point of a nearsighted person is 6.3 m from her eyes, and she wears contacts that enable her to see distant objects clearly. How high is the image formed by the contacts
A 9.9 cm long spring (k = 900 N/m) is compressed by 2.4 cm. What is the potential energy due to the spring in Joules
The club was in contact with a ball, initially at rest, for about 0.0014 s. find the average force exerted on the ball by the club
A light source, S, is located 2.60m below the surface of a swimming pool and 1.30m from one edge of the pool. The pool is filled to the top with water.
A rock is projected from the top of a building with an initial volocity of 14.5 m/s at an angle of 57 degrees above the horizontal. how tall is the building
A circular armature coil is used in a motor with a uniform magnetic field of 1.80 T. The coil has a diameter 95 cm, how much current is flowing throught the motor
q1. a 500.0 g pot of water at room temperature 20.0 degrees c is placed on a stove. how much heat is required to change
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