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A 4.0-kg block slides down a frictionless incline making an angle of 50.0° with the horizontal. (a) What is the total work done on the block when the block slides 1.0 m (measured along the incline
If the box is lifted, at constant acceleration, from rest on the floor to a height of 1.7 m above the floor in 0.42 s, what average power is delivered by the person pulling on the rope?
White light reflected at a perpendicular incidence from a soap film has, in the visible spectrum, an interference maximum of 600nm and a minimum at 450nm with no minimum in between. If n= 1.33 for
When a 420 gram mass is attached to a spring, it oscillates with a period of 0.350 s. If instead, a different mass m2 is attached to the same spring, it oscillates with a period of 0.700 s. a) Find
A 0.144 kg baseball is moving towards home plate with a speed of 43.0 m/s when it is bunted. The bat exerts an average force of 6.50 x 10^3 N on the ball for 1.30 ms. The average force is directed t
A 1.70 kg block and a spring with a force constant of 955 N/m are oriented vertically as shown below. Initially the spring is compressed 4.60 cm and the block is held at rest. When the block is rele
There is an electric field 519N/C in the positive y direction and a magnetic field of 0.319 mT directed out of the screen. Directions and forces of these fields do not change . what is the magnitude
Two identical charges are fixed to diagonally opposite corners of a square, 0.5m on the side. Each charge is 3x10^-9c How much work is done by the electric force if one of the charges is moved to an
The magnetic field is in the negative x direction and has a magnitude of 2.47 mT. At one instant the velocity of the proton is in the positive y direction and has a magnitude of 2560 m/s. At that in
What is the magnitude of the vertical component of Earth's field at this location? Does the measured voltage change as the system moves from one location to another? Explain.
A parallel-plate capacitor has capacitance 0.50µF. (a) How much energy is stored in the capacitor if it is connected to a 9.00V battery?
Calculate the velocity of the target ball after the collision. Calculate the mass of the target ball.
Two billiard balls of equal mass undergo a perfectly elastic head-on collision. If one ball's initial speed was 2.50 m/s , and the other's was 4.30 m/s in the opposite direction, what will be their
A container has 2.0 litres of oxygen gas at 0 degrees Celsius and 1.0 atm pressure a) how many moles of oxygen does it contain? b) how many moles of oxygen are in the container?
A cannon is shot downward from a 195-m high cliff at an angle of 34° with respect to the horizontal. The initial speed is 40.0 m/s. What is its speed when it hits the ground in m/s?
A piece of cheese with a mass of 1.22kg is placed on a vertical spring of negligible mass and a force constant k= 1500N/m that is compressed by a distance of 17.6cm.
On an essentially frictionless, horizontal ice rink, a skater moving at 4.0 m/s encounters a rough patch that reduces her speed by 42% due to a friction force that is 22% of her weight. Use the work
Oppositely charged parallel plates are separated by5.29mm. A potential difference of 600 V exists between the plates. (a) What is the magnitude of the electric field between the plates?
A weight of 10 N is dropped from a height of 1.2 m onto a spring (cushion pad). If the spring has an elastic force constant of 40 N/m by what amount will the spring compress? (no, this is not a simp
A cart of mass Mc is being pulled by an object of mass Mw. Assume Friction is negligible. a) How many forces are acting on the cart?
When Neil Armstrong climbed down to the surface of the Moon via the 3.5-m tall ladder of the Lunar Lander, his potential energy changed by 1260 J. If his mass was 79 kg, what was the mass of his sui
A parallel-plate vacuum capacitor with plate area A and separation x has charges +Q and -Q on its plates. The capacitor is disconnected from the source of charge, so the charge on each plate remain
Calculate the work done on the block by the spring during the motion of the block from its initial position to where the spring has returned to its uncompressed length.
Assume that the eagle's eye detects light that has a wavelength of 550 nm in vacuum. How much time passes until the eagle sees the mice as separate objects?
A ski tow operates on a slope of angle 14.9 of length 300 . The rope moves at a speed of 12.1 and provides power for 48 riders at one time, with an average mass per rider of 68.0 . Estimate the powe