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The trap-jaw ant can snap its mandibles shut in as little as1.4x10-4 s. In order to shut, both mandibles rotate during 91 degree angle. What is the normal angular velocity of one of the mandibles of the trap-jaw ant when the mandibles snap shut?
A heat pump is essentially an air conditioner installed backward. It extracts energy from colder air outside and deposits it in a warmer room. Suppose that the ratio of the actual energy entering the room to the work done by the device's motor is ..
a man goes for a walk starting from the origin of an xyz coordinate system with the xy plane horizontal and the x axis
a pump for a power plant takes in saturated water at 1.5 psi and boosts its pressure to 1500 psi. the pump has an
a charged capacitor is connected to a resistor and a switch as in the figure below. the circuit has a time constant of
A skier is gliding along at 5.0 m/s. On horizontal, frictionless snow. He suddenly starts down a 11 degree incline. His speed at the bottom is 15m/s.
Two point charges each have a value of 30.0 mC and are separated by a distance of 4.00 cm. What is the electric field midway between the two charges
A certain kind of glass has an index of refraction of 1.655 for blue light of wavelength 430 nm and an index of 1.62 for red light of wavelength 680 nm. A beam containing these two colors is incident at an angle of 42.22 degrees on a piece of this g..
A basketball player makes a jump shot. The 0.600 kg ball is released at a height of 2.00 m above the floor with a speed of 7.20 m/s. The ball goes through the net 3.10 m above the floor at a speed of 4.20 m/s Find the work done on the ball by air ..
In a photoelectric effect experiment, a metal sample is illuminated by 10.0 mW of ultraviolet light of wavelength 240 nm. What is the longest wavelength of light that can knock electrons out of this metal
A sphere rolls, without slipping, down an incline. The sphere has a mass of 0.450 kg and a radius of 6.78 cm. what is the rotational inertia of the sphere
What is the magnitude of the electric field strength E such that an electron, when placed in the field, would experience an electrical force equal to its weight? What electric field strength E is required if the electron is replaced by a proton?
A container holds a gas consisting of 1.05 moles of oxygenmolecules. One in a million of these molecules has lost a singleelectron. What is the net charge of the gas
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