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A spacecraft is moving past Earth with a velocity of 0.7c. It launches a rocket that moves in the same direction as the spacecraft at a speed of 0.8c. What is the speed of the rocket relative to Earth?
What current is required in the windings of a long solenoid that has 1710 turns uniformly dispersed over a length of 0.547 m in order to produce a magnetic field of magnitude 0.0002 T at the center of the solenoid.
What is the childs total mechanical energy. If the speed of the child at the lowest position is 2.00 m/s, what is the change in mechanical energy due to friction.
In Europe, surveyors often measure angles in grads. There are 100 grads in one-quarter of a circle. How many grads are there in 2.16 radians
An electron that has velocity v = (2.0 x 106 m/s)i +(3.0 x 106 m/s) j moves through the uniform magneticfield B = (0.30 T)i - (0.15 T)j. Find the force on the electron
A 565 N mountain climber moves across a rope strung across a canyon. When she is more than halfway across, What are the tensions in the rope in front and behind her
A single force acts on a 2.8 kg particle-like object in such a way that the position of the object as a function of time is given by x = 4.2t - 5.0t2 + 1.1t3, Find the work done on the object by the force
the electric field between the plates of a parallel-plate capacitoris horizontal, uniform and has a magnitude E. A smallobject with a charge of -2.60 μC isattached to the string. Assume that the tension in the string is0.0350 N, and the angle it m..
at its hot reservoir at 135 degrees Celsius and has a thermal efficiency of 22.0%. How much heat does the engine waste per cycle
a resistor is known to obey ohms law. when there is a current of 1.72 a in the resistor it has a voltage drop across
The intensity of the electromagnetic radiation from the Sun when it reaches the Venus' surface is approximately 2600 W/m2. What is the amplitude of the associated magnetic field
A 61 kg bungee jumper jumps from a bridge. She is tied to a bungee cord whose unstretched length is 11m , and falls a total of 32 m. Calculate the maximum acceleration she experiences
Three resistors are connected to a in series with a 19 V ideal battery, What is the current coming out of the battery
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