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Suppose you throw a 0.054-kg ball with a speed of 11.6 m/s and at an angle of 28.5° above the horizontal from a building 12.7 m high.
(a) What will be its kinetic energy when it hits the ground?
(b) What will be its speed when it hits the ground?
An air-traffic controller observes two aircraft on his radar screen. The first is at altitude 750 m, What is the distance between the two aircraft
A lens for a 35-mm camera has a focal length given by f = 54mm, What is the magnification of the image on the film
A rope with 300 g of mass per meter is under 580 N tension. A wave with frequency 3.1 Hz and amplitude 6.5 cm is propagating on the rope
A traveling sinusoidal electromagnetic wave in vacuum has an electric field amplitude of 57.1 V/m. Find the intensity of this wave and calculate the energy flowing during 16.9 s through an area of 0.0217 m2
A wire of radius a is surrounded by a cylindrical conductor of inner radius a and outer radius 2a,. find the radius at which the magnetic field is zero
a sloenoid 3.0 cm long consists of 8013 loops of wire if the magnetic field inside the solenoid is 3.0 T, what is the magnitude of the current that flows through it
Let's build a helium atom. Start with a nucleus with 2 protons and 2 neutrons, Calculate the energy gained by the system constructing this atom
An 8.71-kg block slides with an initial speed of 1.62 m/s down a ramp inclined at an angle of 27.0° with the horizontal. find the distance the block slides before coming to rest
Three blocks, each of mass 14kg are on a frictionless table. What is the net horizontal force on block A and what is the horizontal force on block A due to block B
A solid cylinder of mass m, radius r, and rotational inertia 0.5mr^2, starts at rest from the top of a ramp of height h. what would be the speed of the cylinder at the bottom
Consider a group of 20 molecules with the following speeds: three have speed 1 m/s, Determine the rms speed (in m/s) of the molecules in this group at this instant in time
A diatomic molecule is excited to its first rotational energy level, corresponding to J = 1. what is the angular speed of the molecule about its center of mass
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