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The record distance in the sport of throwing cowpats is 81.1 m. Assuming the initial launch angle was 45° and neglecting air resistance determine (a) the initial speed of the projectile and (b)
If the external field strength is 1250 N/C, what are the direction and strength of the field that is generated by the charges induced on the slab? What is the total charge on the negative side of th
A basketball is thrown horizontally with an initial speed of 4.50 m/s. A straight line drawn from the release point to the landing point makes an angle of 30.0 degrees with the horizontal. What was
A uniform electric field of magnitude 435 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. The electron has moved 3.10 cm. What is the change in potential en
A block of mass m1 = 2.00 kg on a frictionless inclined plane of angle 32.0° is connected by a cord over a massless, frictonless pulley to a second block of mass m2 = 2.00 kg hanging vertically.
A diesel engine weighing 20.5 ton (1 ton = 1000 kg) is at rest on a track inclined at an angle of 7.5°. Five cars, each weighing 2.4 ton, are coupled to the engine through steel wires. Find the
At this time, when the tail of the ship is beside us, what does the clock in the tail read?
The disk of the Milky Way is about 105 light years in diameter. A cosmic-ray proton enters the galactic plane with speed v = 0.99c. How wide is the galaxy to the proton (in its direction of motion)?
If you were to walk briefly in space without a spacesuit while far from the Sun (as an astronaut does in the movie 2001,A Space Odyssey), you would feel the cold of space-while you radiated energy,
How much energy must the water transfer to its surroundings in order to freeze completely? The specific heat of water is 4186 J/kg·K, and the latent heat of fusion is 333 kJ/kg.
A conducting solid sphere of radius 20.0 cm is located with its center at the origin of our three-dimensional coordinate system. A charge of 0.429 nC is applied to the sphere.
Compute the force of the ground on his feet if he jumps stiff-legged, the ground compresses 2.10 cm, and the compression of tissue and bones is negligible.
If they are positioned so they form a circle but do not touch and have opposite charges of +4.91 µC and -4.91 µC, find the magnitude of the electric field at the center of the composite
Consider an electric dipole on the x-axis and centered at the origin. At a distance h = 22.9 cm along the positive x-axis, the magnitude of electric field due to the electric dipole is given by k(2q
A +1.33 nC point charge is placed at one corner of a square (1.90 m on a side), and a -5.91 nC charge is placed on the corner diagonally opposite. What is the magnitude of the electric field at eith
A car decelerates uniformly and comes to a stop after 10 s. The car's average velocity during deceleration was 50 km/h. What was the car's deceleration while slowing down?
A speeding motorist passes a stopped police car. At the moment the car passes, the police car starts from rest with a constant acceleration of 4.28m/s^2. the speeding motorist coninues with a consta
A fully charged battery allows the shaver to be used for its maximum operation time, during which 2.91 x 1022 of the charged particles pass between the terminals of the battery as the shaver operates
A moving particle encounters an external electric field that decreases its kinetic energy from 10090 eV to 7680 eV as the particle moves from position A to position B. The electric potential at A is
Two identical point charges (q = +7.60 x 10-6 C) are fixed at diagonally opposite corners of a square with sides of length 0.470 m. A test charge (q0 = -2.20 x 10-8 C), with a mass of 7.20 x 10-8 kg,
A slide projector needs to create a 84 cm high image of a 2.0 cm tall slide. The screen is 240 cm from the slide. Assume that it is a thin lens. (a) What focal length does the lens need? (b) How far
How much carbon is present in the entire atmosphere lying above each square meter of the earth s surface?
A particle starts from the origin at t = 0 with an initial velocity of 4.0 m/s along the positive x axis. If the acceleration is (-5.5 + 2.5 ) m/s2, determine the velocity and position of the partic
An arrow, starting from rest, leaves the bow with a speed of 10.0 m/s. If the average force exerted on the arrow by the bow were doubled, all else remaining the same, with what speed would the arrow
How many haircuts worth of hair must be saved to soak up a 2,000 pound oil spill?