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A man pushes an 80.0 N crate a distance of 5.00 m upward along a frictionless slope that makes an angle of 30o with the horizontal. The force that he exerts is parallel to the slope. If the speed of the crate increases at a rate of 1.50 m/s2, how much work is done by the man?
cancer patient is undergoing radiation therapy in which protons with an energy of 1.2 MeV are incident on a 0.10-kg tumor. How many protons are absorbed by the tumor
An electrically neutral model airplane is flying in a horizontal circle on a 4.0-m guideline, which is nearly parallel to the ground. Find the magnitude of the charges
Consider the motion of a muon as it moves through the Earth's atmosphere. After a time ? = 2.20 e-6 s, it decays into other particles. What is the speed of the muon
A 2kg ball traveling to the right with a speed of 4 m/s collides with a 4 kg ball traveling to the left with a speed of 2 m/s. The total momentum of the two balls after the collision is what.
what is the difference in blood pressure (mm-Hg) between the top of the head and bottom of the feet of a 1.84m tall person standing vertically
A proton and an alpha particle (charge = 2e, mass = 6.64 10-27 kg) are initially at rest, separated by 3.20 10-15 m. Find the speeds of the proton and alpha particle
A 0.95 kg air-track glider is attached to each end of the track by two coil springs. It takes a horizontal force of 0.500 N to displace the glider to a new equilibrium position, x= 0.130 m.
question1a boat crosses a river of width 228 m in that the current has a uniform speed of 1.97 ms. the pilot maintains
An airplane with a speed of 87.7 m/s is climbing upward at an angle of 35.1 ° with respect to the horizontal. When the plane's altitude is 533 m, the pilot releases a package.
A copper block is removed from a 300^0 C oven and dropped into 1 L of water at 20.0^0 C. The water quickly reaches 25.5^0 C and after that remains at that temperature. What is the mass of copper block.
A container of volume V is divided by partitions into three parts containing one kilomole of helium gas, Calculate the kilomole fraction and the partial pressure of each gas in the mixture
To get to a concert in time, a harpsichordist has to drive 123 miles in 2.03 hours. If he drove at an average speed of 55.0 mi/h in a due west direction for the first 1.22 h, what must be his average speed
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