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A person who weighs 625 N is riding a 98-N mountain bike. Suppose that the entire weight of the rider and bike is supported equally by the two tires. If the gauge pressure in each tire is 7.60 X 10^5 Pa, what is the area of contact between each tire and the ground?
A solenoid 90.0 cm long has a radius of 2.90 cm and a winding of 1000 turns; it carries a current of 3.60 A. Calculate the magnitude of the magnetic field inside the solenoid
A 1.00 kg block Is resting against a light, compressed spring at the bottom of a rough plane inclined at an angle of 30 degrees. Kinetic friction between box and plane is 0.100. Suppose the spring is compressed 10 cm from its equilibrium length.
A beam of light in air strikes the surface of a smooth piece of plastic having an index of refraction of 1.55 at an angle with the normal of 20°. The incident light has component E-field amplitudes parallel and perpendicular to the plane of incidence..
If 5.0 ´ 1021 electrons pass through a 20-W resistor in 10 min, what is the potential difference across the resistor
A container of hot water at 50 degrees cools to 49 degrees in how many seconds when it is placed in a room that is t 20 degrees. use newton's law of cooling to find the time it will take for the container to cool from 50 degrees to 49 degrees.
On Apollo Moon missions, the lunar module would blast off from the Moon's surface and dock with the command module in lunar orbit. Find the impact speed of the lunar module
a 10.5-kg uniform board is wedged into a corner and held by a string at a 50 degree angle. calculate the tension in the
A boat moves slowly inside a marina with a constant speed of 1.50 m/s. How fast is the boat moving after accelerating for 5.00s
Two point charges q_1 = 2.10 nC and q_2 = -6.10 nC are 0.100 {rm{ m}} apart. Point A is midway between them; point B is 0.080 {rm{ m}} from q_1 and 0.060 {rm m} from q_2 Take an electric potential to be zero at infinity.
A certain satellite travels in an approximately circular orbit of radius 2.2 × 106m with a period of 8 h 15 min. Calculate the mass of its planet from this information
A force of 20 N holds an ideal spring with a 1-N/m spring constant in compression. The potential energy stored in the spring is
Two ants race across a table 73cm. long. One travels at 4.18cm/s and the other at 3cm/s. When the first one crosses finish line, how far behind is the second one.
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