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A baseball is thrown with an initial horizontal speed of 20 m/s, and an initial vertical speed of 10 m/s. Find the horizontal distance where the baseball will hit the ground, and the total time of fight. Assume g = 10 m/s2
When on the ground, Ian's weight is measured to be 646 N. When Ian is on an elevator, his apparent weight is 743 N. What is the net force on the system
As a spacecraft approaches a planet, the rocket engines on it are fired (turned on) to slow it down so it will go into orbit around the planet. how long (in minutes) must the engines be fired
the positronium atom consists of an electron positron pair bound by their Coluomb potential, if the view the particales as moving in a classical circular orbit what is the radius of the orbit
The sound level measured in the room by a person watching a movie in a home theatre system varies from 63 dB throughout a quiet part to 92 dB throughout a loud part. In the order of how many times louder is the latter sound.
The mass of a copper atom is 1.54 10-25 kg, and the density of copper is 8 920 kg/m3. Find the edge dimension of each cube
An isolated conducting sphere has a 13 cm radius. One wire carries a current of 1.0000048 A into it while another wire carries a current of 1 A out of it. How long in seconds would it take for the sphere to enhance in potential by 820 V.
Compute gauge pressure of the flowing water
question1a 8kg mass moves in a circular path of 4m radius on a frictionless horizontal table. it is attached to a
An electron starts from rest 43.1cm from a fixed point charge with -0.150nC. How fast will the electron be moving when it is very far away
A 984-kg satellite orbits the Earth at a constant altitude of 106-km. What is the change in the system's potential energy
A woman inside an elevator is standing on a scale. Before the elevator starts moving the scale shows 50 kg, calculate the acceleration of the elevator if after the elevator starts moving upward the scale reads 70kg. What will the reading of the sc..
a child tosses a stick into a stream. the stick moves downstream at a rate of 1.5 ms. how fast is the stick moving
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