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Find the new tension and the acceleration of each mass when a second washer is removed from the left side.
Two students stand poised to leap off a high dive structure into the swimming pool below. Student B is twice as massive as student A. Which of the following is true?
A football player tests his vertical jump by jumping straight up a distance of 47.3 inches. What was the player's initial velocity in meters per second?
Consider a heavy crate resting on the bed of a flatbed truck. when the truck accelerates, the crate also accelerates and remains in place. Identify the force that accelerates the crate?
A basket ball player is 10.0 m from the basket. The height of the basket is 3.05 m. If he shoots the ball at an angle of 51.3 degrees with the horizontal from a height of 1.99 m at what speed must h
a) Find an expression for the velocity of the particle as a function of time. (Use any variable or symbol stated above as necessary.)
Transverse waves with a speed of 53.0 m/s are to be produced on a stretched string. A 4.45 m length of string with a total mass of 0.0600 kg is used. (a) What is the required tension in the string?
A 0.54 kg object connected to a light spring with a force constant of 21.0 N/m oscillates on a frictionless horizontal surface. If the spring is compressed 4.0 cm and released from rest. (a) Determ
What is the speed Vfinal of the electron when it is 10.0 cm from charge 1?
The mean distance between the center and the center of the moon is 3.84x108 m and the moon has an orbital period of 27.3days find the distance from earth of an artificial satellite that has an orbit
A 400m wide river flows from west to east at 30 m/min. Your boat moves at 100 m/min relative to the water no matter which direction you point it.
The valve is opened and air flows slowly into the balloon until the pressure reaches the same pressure as in the tank; then the valve is closed. Determine the final temperature of air in the balloon
An artillery shell is fired with a minimal velocity of 420 m/s at 53o above the horizontal. To clear an avalanche, it explodes on a mountain side 30 s after firing. What is the X-coordinate relative t
What is the initial speed of the ball? How high is the ball above the floor when its velocity vector makes a 48.5o angle with the horizontal?
(a) What is the electric field at the sphere's surface? (b) If V = 0 at infinity, what is the electric potential at the sphere's surface?
The distance between earth and sun is usually expressed as one astronomical unit (AU). Using this unit, find the distance between the sun and mars, which has a period of approximately 686 earth days
If two such drops of the same charge and radius combine to form a single spherical drop, what is the potential at the surface of the new drop?
(a) How much work is done by the electric field due to the sheet if a particle of charge q = +1.60 × 10-19 C is moved from the sheet to a point P at distance d = 3.14 cm from the sheet?
A swift moving hawk is moving due west with a speed of 30 m/s; 5.0 s later it is moving due north with a speed of 20 m/s. (A) What are the magnitude and direction of Δvav vector during this 5
A hotel elevator ascends 200 meters with maximum speed of 5 m/s. Its acceleration and deceleration both have a magnitude of 1.0 m/s^2. a) How far does the elevator move while accelerating to full sp
An 87-O resistor and a 64-O resistor are connected in series across a battery. The voltage across the 87-O resistor is 19 V. What is the voltage across the 64-O resistor?
A violin string vibrates at 294 Hz when unfingered. At what frequency will it vibrate if it is fingered one-third of the way down from the end? (That is, only two-thirds of the string vibrates as a
A point charge +3.5 uC is released from a point A where the potential is 450 V, and arrives at a distance point B. The charge experiences a change in electrical potential energry of 0.001 joule. Wha
Two alpha particles (helium nuclei), each consisting of two protons and two neutrons, have an electrical potential energy of 6.32 × 10-19 J. What is the distance between these particles at this
A uniform electric field of magnitude 325 V/m is directed in the negative y direction. The coordinates of point A are (-0.200, -0.300) m and those of point B are (0.400, 0.500) m. Calculate the pote