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A 54-kg pole vaulter running at 11 m/s vaults over the bar. Her speed when she is above the bar is 1.7 m/s, determine her altitude as she crosses the bar
A gas is compressed adiabatically by a constant force of 10 N that acts over a 0.5 m distance. What is the change in the internal energy of the gas
A 2.0kg wood block is launched up a wooden ramp that is inclined at a 27? angle. What speed does it have when it slides back down to its starting point
An inverted cylindrical tube is immersed in water with 20.0 cm protruding from the surface, what will be the final pressure of the air
In the figure below, a constant horizontal force app of magnitude 11 N is applied to a uniform solid cylinder by fishing line wrapped around the cylinder. what is the frictional force acting on the
A runner wearing spiked shoes pulls a 18 kg sled across frictionless ice using a horizontal spring with spring constant 170 N/m. What is the acceleration of the sled
You are walking around your neighborhood and you see a child on top of a roof of a building kick a soccer ball. How tall is the building that the child is standing on
Starting from rest, a 4.80-kg block slides 2.00 m down a rough 30.0° incline. The coefficient of kinetic friction between the block and the incline is ?k = 0.436. Determine the work done by the
A dedicated sports car enthusiast polishes the inside and outside surfaces of a hubcap that is a section of a sphere. When he looks into one side of the hubcap, How far is his face from the hubcap
A proton moves perpendicular to a uniform magnetic field at a speed of 1.10 107 m/s, Determine the magnitude and direction of the field
A 1970-kg car is moving down a road with a slope of 14% while speeding up at a rate of 3m/s^2. What is the direction and magnitude of the frictional force
It takes the elevator in a skyscraper 4.5s to reach its cruising speed of 12m/s. What is the passenger's weight before the elevator starts moving
Charges of 3.0 nC, -2.0 nC, -7.0 nC, and 1.0 nC are contained inside a rectangular box with length 1.0 m, width 2.0 m, find the electric flux through the surface of the box
A shopper in a supermarket pushes a cart with a force of 37 N directed at an angle of 25° below the horizontal. What is the net work done on the cart
Source charge Q1= -3.00nC located at (0, 5.00mm). Source charge Q2= +2.00nC located at the origin. Find the Magnitude & direction of the net electric field
If it takes an average force of 8.79 N to push a 4.35-g dart 4.65 cm into a dart gun, assuming the barrel is frictionless, how fast will the dart exit the gun
A 0.252-kg volleyball approaches a player horizontally with a speed of 15.3 m/s. What impulse is delivered to the ball by the player
A small, 1.90-mm-diameter circular loop with R = 1.10×10?2? is at the center of a large 100-mm-diameter circular loop. What is the induced current in the inner loop
Calculate the escape velocity for a planet that has twice the mass of Earth and is half the size of Earth
A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 3.26 x 105 N. What is the work done on the jet by the ca
Most of the blackholes observed by astronomers have masses equal to a few solar masses (the result of the death of a high mass star) or have masses equal to several million solar masses
A solenoid inductor has an emf of 0.90V when the current through it changes at the rate 10.0 A/s. How many turns does the inductor have
An m = 6.60-kg clay ball is thrown directly against a perpendicular brick wall at a velocity of 22.0 m/s and shatters into three pieces, What is the direction of the third piece
A 4100-kg truck traveling with a velocity of 13 m/s due north collides head-on with a 1300-kg car traveling with a velocity of30 m/s due south. What is the momentum of each vehicle prior to the colli
Vector F= 3xi + 5j + 5z^2k. How much work is done in moving from r0=(0,0,0) to r1=(3,2,1)? how fast will the object be going