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1. When a rock thrown straight upwards gets to the exact top of its path, its
A) Velocity is about 10 m/s and its acceleration is zero.
B) Velocity is zero and its acceleration is zero.
C) Velocity is zero and its acceleration is about 10 meters per second per second.
D) Velocity is about 10 m/s and its acceleration is about 10 meters per second per second.
E) None of these
2. While a car travels around a circular track at a constant speed its
A) Inertia is zero.
B) Acceleration is zero.
C) Velocity is zero.
D) None of the above
An RLC circuit has a reactance, due to its capacitance, of 11kΩ , a reactance, due to it inductance, of 3kΩ , and a resistance of 29kΩ . What is power factor of circuit?
A hairpin configuration is formed of two semiinfinite straight wires that are 3.42 cm apart and joined by a semicircular piece of wire (whose radius must be 1.71 cm, Find the magnetic field at the origin of the coordinate system
A 30-kg girl is bouncing on a trampoline. During a certain interval after she leaves the surface of the trampoline, How high does she rise during this interval
at 445 ordmc calculate the equilibrium concentration of hi when 0.500 m hi 0.0200 m h2 and 0.0200 m i2 are placed in a
To the unaided eye, the planet Jupiter has an angular diameter of 50 arc seconds. What will its angular size be when viewed during a 0.75 m focal length refracting telescope with an eyepiece whose focal length is 30 mm?
A shopper pushes a cart 44- m south down one aisle and then turns 90.0° west and moves 30 m. He then makes another 90° turn and moves 13 m.
A stunt driver is attempting to jump 20 cars of total length of 42m using an inclined ramp. Calculate how long the stunt driver is in the air during this stunt
A speck of clay of mass m = 0.01 kg strikes and stick to a wooden block of mass M = 0.99 kg, which rests on a frictionless horizontal surface and is attached to a spring with spring constant k = 100 N/m. The impact compresses the spring 10 cm. Fi..
A bullet with a mass of 4.0 g and a speed of 650 m/s is fired at a block of wood by a mass of 0.095kg. The block rests on a frictionless surface and is thin enough so that the bullet passes completely during it. Instantly after the bullet exits the b..
question a 5 turn loop of wire with a radius of 4cm moves toward a 0.15t magnetic field in a 3 second time interval.
An electron is placed in a uniform electric field of strength 210 N/C. If the electron is at rest at the origin of a coordinate system at t = 0 and the electric field is in the positive x-direction
A horizontal circular platform rotates counterclockwise about its axis at the rate of 0.979 rad/s. Calculate the total angular momentum of the system
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