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After solving a difficult physics problem, an excited student throws his book straight up. It leaves his hand at 3.7 m/s from 1.5 m above the ground. How much time does it take until the book hits the floor?
If a bird were to start out from the origin (where the student starts) and fly directly (in a straight line) to the school, illustrate what distance would the bird cover? Express your answer in miles.
40K is a naturally occurring rare isotope of potassium responsible for some of our exposure to background radiation. Find the radius of a 40K nucleus
A potters wheel is a disk of mass 3.50kg and radius .450m and is spinning freely around a vertical axis through its center with an angular speed of 14.0rad/s. what is the angular speed of the wheel+clay
Three astronauts, propelled by jet backpacks, push and guide a 114 kg asteroid toward a processing dock, exerting the forces, with F1 = 32 N, F2 = 52 N, F3 = 39 N, θ1 = 30°, and θ3 = 60°. What is the (a) magnitude and (b) angle (measured relative ..
Presume the needle moves 7.5 mm from its highest to its lowest position and it makes 26 stitches in 9.1 s. What is the highest needle speed.
In being launched from rest it moves through a distance of 87.00 m and has a kinetic energy of 4.5*10^7 J at lift-off. What is the work done on the jet by catapult.
The tension in a string is 20.6 n and its linear density is .649 kg/m. A wave on the string travels in the -x direction. It has amplitude of 3.71 cm and a frequency of 10.6 hz. What are the speed and wavelength of wave.
Calcualte the radiation dosage (in rads) for a 67-kg person that is exposed to 6.0 seconds to a 3.0 Ci source of beta radiation.
A rock is tossed straight up with a velocity of 23 m/s When it returns, it falls into a hole 10m deep, What is the rock's velocity as it hits the bottom of the hole
A bicycle wheel is rotating at 45 when the cyclist begins to pedal harder, giving the wheel a constant angular acceleration of 0.42.
A simple pendulum has a mass of 0.350 kg and a length of 7.00 m. It is displaced through an angle of 12.0° and then released, What is the maximum angular acceleration
A 2.5 cm-long horizontal wire segment has mass 0.15 g and carries a current sufficiently large that it levitates when the segment is in a region of B field upward with magnitude 1.5 T
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