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A .5kg mass attached to the end of a string swings in a vertical circle (radius =2m) When the mass is at the lowest point on the circle, the speed of the mass is 12m/s. What is the magnitude of the force of the string on the mass at this position?
A 81.0kN spaceship comes in for a vertical landing. From an initial speed of 1.00 km/s, it comes to rest in 2.10min with uniform acceleration. What braking force must its rockets provide
The ball is caught 55.3841m from the thrower. The acceleration due to gravity is 9.81m/s square. Explain how long is it in the air?
The Paschen series in the hydrogen emission spectrum is formed by electron transitions from ni > 3 to nf = 3. What is the longest wavelength in the Paschen series
Two atomic clocks are carefully synchronized. One remains in New York, and the other is loaded on an airliner that travels at an average speed of 250m/s, Which clock will show the shorter elapsed time
Two identical spaceships are traveling in the same direction. An observer on Earth measures the first to have speed 0.80c, What is the speed of the second spaceship
What fraction of the power radiated by the sun is intercepted by the planet Neptune? The radius of Mercury is 2.48 107 m
Superman is jogging alongside the railroad tracks on the outskirts of Metropolis at 150 km/h. What is superman's final speed
A laser beam is incident on two slits with a separation of 0.210 mm, and a screen is placed 5.30 m from the slits. what is the wavelength of the laser light
A nonconducting ring of radius of 11.6 cm is uniformly charged with a total positive charge of 10.0 µC. find the magnitude of the magnetic field on the axis of the ring 5.00 cm from its center
A square with sides of length L has a point charge at each of its four corners. Find the magnitude and sign of the charges Q such that each of the +1.00 µC charges experiences zero net force
Consider two particles, each with a charge of +Q located at the opposite corners of a square of side d. What is the direction of the net electrical field at point P
A uniformly charged conducting sphere of 1.6 m diameter has a surface charge density of 8.4 µC/m2. Find the net charge on the sphere
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