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What is the velocity of a beam of electrons that go undeflected when passing through crossed electric and magnetic fields of magnitude 1.36x104V/m and 2.86x10-3T, respectively?
A transverse wave propagates in the positive x-axis with a wavelength of 0.3m and a period of 0.001s. what is the frequency of this wave
large cockroaches can run as fast as 1.50 ms in short bursts. suppose you turn on the light in a cheap motel and see
You are watching an archery tournament when you start wondering how fast an arrow is shot from the bow. What was the landing speed of the arrow
A stunt man whose mass is 70kg swings from the end of a 4.50m long rope along the arc of a vertical circle. Assume that he starts from rest when the rope is horizontal, find the tensions in the rope that are required to make him follow his circula..
Tarzan, who weighs 820 N, swings from a cliff at the end of a 20.0 m vine that hangs from a high tree limb and initially makes an angle of 22.0 with the vertical. What is the force on him from the vine in unit-vector notation
A screw with 15 threads per centimeter is driven 1.01 cm into its fixture in 11.2 s with a cordless electric screwdriver. What is the average angular speed of the screwdriver
Calculate the magnitude of the induced emf in a 400-turn coil if the magnetic field inside the coil increases from 0T to 0.0200T (200g) over a time of 0.10 s
When two unknown resistors are connected in series with a battery, the battery delivers 215 W and carries a total current of 5.00 A. For the same total current, 42.0 W is delivered when the resistors are connected in parallel. Decide the values of th..
Two spherical asteroids have the same radius R. Asteroid one has mass M and asteroid two has mass 2M. Find the speed of asteroid just before they collide
The SLAC national laboratory is the largest linear accelerator in the world, and can accelerate electrons through a potential difference of 90 billion volts (9x10^10 V) through a tube 3.2 km long. How much energy do the electrons have at the end ..
A 120-N child is in a swing that is attached to ropes 2.20 m long. Find out the gravitational potential energy associated with the child relative to her lowest position at the following times.
The drawing shows a collision among two pucks on an air-hockey table. Puck A has a mass of 0.0100 kg and is moving along the x axis with a velocity of +4.87 m/s. It makes a collision with puck B, which has a mass of 0.0200 kg and is initially at rest..
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