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the gravitational force on an object on the surface of the earth is F , what's the gravitational force on the satelite when at height R/20, where R is the radius of the Earth ?
On a cool morning, when the temperature is 14 ^\circ{\rm C}, you measure the pressure inyour car tires to be 30 psi. What pressure will your tire gauge now show
Air Friction damps a tuning fork so that the amplitudedecreases by (1/8.1) per second. Resonance= 74 Hertz. What percent change in frequency results
light of wavelength 659.9 nm is emitted by a star. the wavelength of this light as measured on earth is 660.9 nm. how
In a colliding-beam experiment, an electron and a positron traveling at the same speeds but opposite directions collide, producing two photons. What were the electron and positron speeds
A simple pendulum of length 2.00 m is made with a mass of 2.00 kg. What is the speed of the mass when the pendulum is 45(degree) above its lowest position
The acceleration of a block attached to a spring is given by a = -(0.313 m/s2) cos([2.53 rad/s]t.) What is the maximum speed of the block
in an 8-ounce glass of water estimate the available d-d fusion energy. for how long could this energy provide the
A robot probe drops a camera off the rim of the 389 m high cliff on Mars, where the free fall acceleration is 3.7 m/s^2. Find out velocity with which it hits the ground and the time required for it to reach the ground.
a father racing his son has half the kinetic energy of the son who has half the mass of the father.the father speeds up
A solenoid is constructed with a total of 1500 turns wound around a length of 25 cm. A constant current of 1.7 A flows through the solenoid. Calculate the magnetic force on the proton
A Celsius thermometer in laboratory reads the surrounding temperature as 30°C, find what is the temperature in Fahrenheit and absolute scale
during the compression stroke of a certain gasoline engine, the pressure increases from 1.00 atm to 5.0 atm. by what factor does the volume change
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