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Your cat "Ms" (mass 7.00kg) is trying to make it to the top ofa frictionaless ramp 2.00 m long and inclined upward at 30 degreesabove the horizontal . since the poor cat cant get any traction onthe ramp, you push her up the entire length of the ramp by exertings constant 100N force parallel to the ramp. If ms. takes a runningstart so that she is moving at 2.40m/s at the bottom of the ramp, what is her speed when she reaches the top of the incline.
A large circus ride has a centripetal acceleration at 6.0 m/s2. If the circular ride has a radius of 11.0 m, what is its velocity at the edge
A 35.0-kg child swings in a swing supported by two chains, each 2.94 m long. The tension in each chain at the lowest point is 418 N. Find the child's speed at the lowest point
Infrared photons cause a particular piece of metal to emit photoelectrons. Would photoelectrons be emitted when the metal is illuminated by visible light?
A star's temperature is5161K. According to the Stefan-Boltzmann law, how much energy is radiated into space per second by each square meter of the star's surface
An object has a kinetic energy of 303 J and the momentum of magnitude 22.9 kg·m/s. Find the speed and the mass of the object.
A satellite in a circular orbit around the earth with a radius 1.011 times the mean radius of the earth is hit by an incoming meteorite. Calculate the amount of that work converted to heat
A baseball approaches home plate at a speed of 46.0 m/s, moving horizontally just before being hit by a bat. What is the average vector force the ball exerts on the bat during their interaction
A harpsichord string of length 1.32 m and linear mass density 24.0 mg/m vibrates at a (fundamental) frequency of 457 Hz. What is the frequency of the sound wave in air produced by vibration of the string
An engine of an aircraft propeller delievers an amount of power 171 hp to the propeller at the rotational velocity of 2360 rev/min, How much torque does the aircraft engine provide
A circuit consists of two 475-k%u03A9 resistors in series with an ideal 12.0-V battery. Calculate the potential drop across one of the resistors
Disscus how the conservation of energy law explain whys the temperature of a gas increases when it is quickly compressed, whereas the temperature decreases when the gas expands.
In a football game, a receiver is standing still, having just caught a pass. Before he can move, a tackler, running at a velocity of +4.8 m/s, grabs him. find the mass of the receiver
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