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A proton is fired from far away toward the nucleus of a mercury atom. Mercury is element number 80, and the diameter of the nucleus is 14.0 fm.
If the proton is fired at a speed of 3.4×107m/s , what is its closest approach to the surface of the nucleus? Suppose the nucleus remains at rest.
Express your answer to two important figures and include the appropriate units.
A 2.0-kg ball is attached to the end of a 2.5-m string to form a pendulum. This pendulum is released from rest with the string horizontal
Two firecrackers explode at the same place in a laboratory and are separated by a time of 3 years as measured on the laboratory clock. What is the spatial distance between these two events in a rocket frame in which the events are separated in time..
four identical metallic objects carry the following charges 1.19 6.73 -4.26 and -9.98c. the objects are brought
a 4.6 kg dog stands on a 20 kg flatboat at distance D = 6.1 m from the shore. It walks 2.2 m along the boat toward shore and then stops. find how far the dog is then from the shore
The drawing shows two boxes resting on frictionless ramps. One box is relatively light and sits on a steep ramp. The other box is heavier and rests on a ramp that is less steep. The boxes are released from rest at A and allowed to slide down the ramp..
a charged capacitor is connected to a resistor and a switch as in the figure below. the circuit has a time constant of
A wrecking yard inventor wants to pick up cars by charging a 0.400 m diameter ball and inducing an equal and opposite charge on the car. What is the electric field near the surface of the ball
Two cars of the same mass collide at an intersection. Just before the collision one car is traveling east at 40.0 km/h and the other car is traveling south at 70.0 km/h. what is the speed of the cars immediately after the collision
A 1,200 W hair dryer is operated on a 120 V circuit for 15 minutes. If electricity costs $0.10/kW h, what was the cost of using the blow dryer.
A small coin is placed on a flat, horizontal turntable. The turntable is observed to make three revolutions in 3.14s. What is the speed of the coin when it rides withoutslipping at a distance of 5.0 cm from the center of theturntable
In the Bohr model, the electron is imagined to move in a circular orbit about a stationary proton. obtain what would be the corresponding orbital radius
A golf club makes impact with a 0.045 kg golf ball during a drive off the tee. The loft angle of the club (the angle between the club face and vertical) is 10 degrees. What is the direction of this resultant force
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