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If the 1 Kg standard body has an aceleration of 2.00 m/s^2 at 20 degrees to the positive direction of an x axis what are
a) the x componend and
B) the y component of the net force acting on the body and
C) what is the net force in unit-vector notation? Please show work. Thanks!
A violinist is tuning her instrument to concert A (440 Hz ). She plays the note while listening to an electronically generated tone of exactly that frequency, What was the frequency of her violin when she heard the 4.00 beat
A torque of 14Nm is applied to a heavy wheel whose moment of inertia is 34 kgm2. What is the angular acceleration of the wheel
What is the half-life in days of a radioactive sample with 5.2×1015 atoms and an activity of 5.1×108Bq ? What is the half life in days
A double concanve lens has equal radii of curvature 15.1 cm. What is the index of refraction of the lens material
An object at distance (s) from a concave mirror of focal length (f) produces a real image at distance(s*) from the mirror. Will the new image be real or virtual
Suppose you have an electric hot water heater for your house which is an aluminum cylinder which has a 0.56 m radius and is 1.8 m high. The walls are 1.0 cm thick.
A 100g ball is thrown straight up in the air from a height of 1.5 m above the floor. what was the initial speed of the ball
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plane flies at 1.13 times the speed of sound. Its sonic boom reaches a man on the ground 0.99 min, What is the altitute of the plane
q1. a tennis ball is served at 73.12 ms and was in contact with the racquet for .027 s and starts from rest. the ball
You pull your little sister across a flat snowy field on a sled. Your sister plus the sled have a mass of 31 kg. The rope is at an angle of 30 degrees to the ground. As you pull with a force of 30 N, the sled travels a distance of 45 m.
You are standing at the rear end of a raft that is 6.0 m long. The raft has a uniform mass of 120 kg and is at rest on a lake. how far are you from the end of the pier
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