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A person who weighs 600 N is riding a 98 Nmountain bike. Suppose the entire weight of the rider and bike is supported equally by the two tires. If the gauge pressure in eachtire is 8.05*105 Pa, what is the area of contact between each tire and the ground?
An object of 30 kg mass is pulled with a force 1.2 * 10^2 N at angle ?=30 degree over the distance 5 meter.If the coefficient of friction is 0.2, what is workdone by the force of friction
A manchine part has the shape of a uniform sphere of mass 225g and diametere 3.00cm. It is spinning about a frictionless axle through its center, how long will the part spin until it stops
A second converging lens of focal lenght 12 cm is placed to the right of the first lens. If the final image of the combined lens system is virtual and 15 cm from the second lens, then compute the distance between the two lenses
The work function for cesium, 1.81 eV, is much lower than the work function for other metals. What is the maximum electron kinetic energy when cesium is illuminated with light of 512-nm wavelength
Two lightweight rods d = 30 cm are mounted perpendicular to an axle and at 180° to each other. What is the component of the total angular momentum along the axle
A 60-kg skier starts from rest from the top of a 50-m high slope. If the work done by friction is -6.0 x 103 J, what is the speed of the skier
A wire has a diameter of 1.74 mm and a length of 37 m, What is the resistivity of the wire?
A certain Crystal has a set of planes spaced 0.30 nm apart. A beam of neutrons strikes the crystal at normal incidence and the first maximum of the diffraction occurs at ?=42 degree. What is de-Broglie wavelength of neutron beam? What should be momen..
A ball of mass 8.9 g with a speed of 22.4 m/s strikes a wall at an angle 14.0o and then rebounds with the same speed and angle. find the magnitude of the impulse associated with the collision force
The average density of the planet Saturn is 688 kg/m3. The acceleration of gravity on its surface is 11.20 m/s2. Calculate the average radius of Saturn
At 12 volt battery is connected in parallel with a 100,200,and 500 resistors. How much current flows through each resistors
About 50000 years ago, a meteor crashed into the earth near present-day Flagstaff, Arizona. How much kinetic energy did this meteor deliver to the ground
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