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A bolt drops from the ceiling of a moving train car that is accelerating northward at a rate of 2.09 m/s2.
(a) What is the acceleration of the bolt relative to the train car?
What is the flow speed of the medicine through the needle. What is the least force the nurse needs to apply to the syringe.
An object is thrown upward with a speed of 14 m/s on the surface of planet X where the acceleration due to gravity is 3.5 m/s2
A dielectric-filled parallel-plate capacitor has plate area A = 10.0cm2 , plate separation d = 5.00mmand dielectric constant k = 5.00. Find the energy U1 of the dielectric-filled capacitor
A 4.5 kg fish swimming 2 m/s swallows an absent minded 1 kg fish swimming toward it at a velocity that brings both fish to a halt at once after lunch. What is the velocity v of the smaller fish before lunch.
A 3.00kg mass and a 5.00kg mass hang vertically at opposite ends of a rope that goes over an ideal pulley. what is the magnitude of the acceleration of the masses
find the mass of Earth from the period T and the radius r of the Moon's orbit about the Earth. T=27.3 days and r=3.82E5 km. suppose the Moon orbits the center of Earth rather than the center of mass of the Earth-Moon system.
One particle has a mass of 4.41 x 10-3 kg and a charge of +6.92 ?C. A second particle has a mass of 6.52 x 10-3 kg and the same charge. The two particles are initially held in place and then released.
Conservation of Energy A 100kg skier at the top of a 2km high mountain tucks the whole thing but only gets a final speed of 50m/s
In the semiconductor industry, an insulating layer can be built onto silicon devices by oxidizing the silicon to form silica, SiO2, Write down a balanced equation for the reaction between silica and HF.
An airplane pulls a 24 kg banner on a cable as depicted in the figure below. When the plane has a constant cruising velocity the cable makes an angle of ? = 26°. What is the drag force exerted on the banner by the air
A ruler of mass m = 75g and L=3.0meters is placed so that it is exactly balanced across two spinning cylinders a distance d = 1.0meters apart. What is the frequency of oscillation in the ruler
A pilot knows a 7.00 km distance lies between two landmarks A and B on the level ground below. When he is over landmark A, What is the airplanes altitude
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