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A 1.53 kg ball is attached to a ceiling by a 3.06 m longstring. The height of the room is 5.12 m. The acceleration of gravity is 9.8 m/s2.
What is the gravitational potential energy associated with the ball relative to the ceiling? Answer in J.What is the gravitational potential energy relative to the floor? Answer in J.What is its gravitational potential energy relative to a pointat the same elevation as the ball? Answer in J.
If the separation between the two plates is double the value calculated in part (a), what potential difference is required for the capacitor to store charge of magnitude 260 pC on each plate
A 50kg woman is in a rotor with a 2m radius, laying against theinner surface. The friction between the woman’s sweater andthe surface is μs = 0.5.
After 35 minutes of running, at the 9km points in a 10km race, you find yourself 100 m behind the leader and moving at the same speed. what should your acceleration be if you are to catch up by the finish line? assume that the leader maintains a c..
An airplane needs to reach a velocity of 407 km/h to take off. On a 2000m runway, what is the least acceleration necessary for the plane to take flight.
1 you are conducting an osmosis experiment with a semi-permeable dialysis membrane of fixed pore size. if the solution
A metal sphere has an outer radius of R2= 20 cm. The inside is hollow up to a radius of R1= 10 cm, with the inside empty(vacuum). The total mass of the sphere is 2 kg. The sphere is fully submerged underwater? What is the total force on the sphere?
When you drop two balls at once, why doesn't only one marble come off the end twice as fast? Write down the kinetic energy of one marble with mass m and velocity 2v
A 3.85 kg mass attached to a spring oscillates with a period of 0.355 s and an amplitude of 20.5 cm. find the maximum speed of the mass
Diagnostic ultrasound offrequency 4.9 MHz is used to examine tumors in soft tissue. What is the wavelength in air of such a sound wave
The springs of a 1500 kg car compress 5.0 mm when its 68 kg driver gets into the driver's seat. what will be the frequency of vibrations
a 0.5kg box is sliding with a speed of 6ms on a frictionless level surface toward a spring of force constant k. it hits
A wheel released from rest is rotating with constant angular acceleration of 2.7 rad/s2. (a) After 4.5 s, what is its angular velocity? in rad/s (b) Through what angle has the wheel turned? in rad
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