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Two air-track gliders m1 and m2 are joined together with a light string. A constant horizontal force of 11.00 N to the right is applied to mass m2. If m1 = 2.4 kg and m2 = 0.8 kg, What is the tension in the cord joining gliders?
On a spacecraft two engines fire for a time of 578 s. One gives the craft an acceleration in the x direction of ax = 5.33 m/s2, Calculate the magnitude of the initial velocity
Consider two particles with masses that differ by a factor of 325. what is the ratio of their kinetic energies
In Anchorage, collisions of a vehicle with a moose are so common that they are referred to with the abbreviation MVC. What percent of the original kinetic energy is lost in the collision to other forms of energy
In a dentist's office an X-ray of a tooth is taken using X-rays that have a frequency of 6.08 × 1018 Hz. What is the wavelength in vacuum of these X-rays
A certain organ pipe, open at both ends, produces a fundamental frequency of 256 in air.If the pipe is filled with helium at the same temperature, what fundamental frequency will it generate ? Take the molar mass of air to be 28.8 and the molar ma..
a bee that is 3m away from a person produces a buzzing sound that is barely audible (the intensity is the threshold of hearing I0) What is the decible level of 1000 bees
The following takes place with inelastic collision. Ball 1 travels up with a mass of 3 Kg and a velocity of 20 m/s. How high do the balls travel after the collision
A child in danger of drowning in a river is carried downstream by a current that flows uniformly with a velocity of 2.0 meters per second.
Assume that it takes 2.30 kg of oxygen to burn 1.00 kg of coal. (The actual amount varies with the type of the coal). What is the total mass of the reagents used in the combustion all through the 30 days.
A 57-kg pole vaulter running at 1.1 m/s vaults over the bar. Her speed while she is above the bar is 1.0 m/s. Avoid air resistance, as well as any energy absorbed by the pole, and determine her altitude as she crosses the bar.
Consider an object on an incline where friction is present. The angle between the incline and the horizontal is ?, Find an expression for the acceleration of this object. Treat down the incline as the positive direction
The coefficient of kinetic friction between a 20 Kg box and the floor is 0.40. How much work does a pulling force do on the box in pulling it 8.0 m at the constant speed? The pulling force is directed 390 above the horizontal.
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