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Figure shows two observers 20 m apart, on a line that connects them and a spherical light source. If the observer nearest the source measures a light intensity 80% greater than the other observer, how far is the nearest observer from the source?
A 100.0 kg bungee jumper steps off a bridge with a light bungee cord tied to her and to the bridge. The unstretched length of the cord is 13.0 m. She reaches the bottom of her motion 38.0 m below the bridge before bouncing back. Her motion can be ..
You have a 2.01-m-long stretched string with a mass of 19.5 g. When you oscillate the string at 440 Hz, Calculate the tension in the string
A particle that has an 8.2- micro-coulomb charge moves with a velocity of magnitude 5.0 x 10^5 m/s along the +x-axis . It experiences no magnetic force , although there is a magnetic field present
a solid block is suspended from a spring scale. the reading on the scale when the block is completely immersed in water
A skier approaches the base of an icy, frictionless hill with a speed of 13.4m/s . The hill slopes upward at 24.0^\circ above the horizontal. Find the acceleration of this skier
The measured current in a circuit in your uncle's house is 12 A current. In this circuit, the only appliance that is on is a space heater that is being used to heat the bathroom. What is the voltage at the wall outlet in the bathroom
A positive charge +q1 is located to the left of a negative charge -q2. On a line passing through the two charges, there are two places where the total potential is zero. What is the distance between the charges
The wheel of a car has a radius of 0.320 m. The engine of the car applies a torque of 288 N · m to this wheel, What is the magnitude of the static frictional force
A 65.0 kg diver is 3.50 m above the water, falling at speed of 6.40m/s. Calculate her kinetic energy as she hits the water. (Neglectair friction)
A car with a total mass of 1.92*10^3 kg has wheels of radius 31.0 cm and moment of inertia 0.830 kg · m2. What is the car's translational kinetic and rotational energy
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.
Suppose 1.85 x 1020 electrons move through a pocket calculator during a full day's operation.How many coulombs of charge moved through it
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