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What are the differences among meteorites, asteroids, and comets? What roles did each play in the formation of the Moon?
A sample of helium-4 behaves as an ideal gas as it isheated at constant pressure from 294 K to 404 K. what is the mass of helium present
an uncharged capacitor and a resistor are connected in series to a source of emf. if 6.00 v c 21.0 microf and r 100
Suppose the scale of a crown read 7.84 N in air and 6.84 N in water. Gold density = 19.3 g/cm3 , What would the scale reading be in water
A light ray passes during a spherical raindrop, undergoing refraction as it enters the drop, than total internal reflection, and refraction as it leaves the drop. Show that the angle of the incident ray and exiting ray is 4 sin-1 (sin θ/n)-2θ
an athlete executing a long jump leaves the ground at a 30.9o angle and travels a horizontal distance 7.03m. what was
A 78.0-kilogram child starts from rest from the top of a frictionless slide that is 5.4 meters tall. The bottom of the slide is 28.6 centimetres above the ground. The kinetic friction is a constant 116. 0newtons and acts over the 5.0 meter length of ..
In a football game, a receiver is standing still, having just caught a pass. Before he can move, a tackler, running at a velocity of +3.8 m/s, grabs him. determine the mass of the receiver
The Fermi energy of copper at 300 K is 7.05 eV. What is the average energy of a conduction electron
If the speed limit on this road is 30 mph = 13.4 m/s, was either of the cars speeding before the collision? For full points, your answer must include a correct numerical calculation.
A block of mass m = 3.07 kg is attached to a spring (k = 29.3 N/m) by a rope that hangs over a pulley of mass M = 6.14 kg and radius R = 8.81 cm. find the maximum extension of the spring
A coil with inductance 370 mH is connected in series with a 220 ohm resistor, a 47.0 microF capacitor and a 25.0 V, 60.0 Hz AC source. Find the total impedance in this circuit
You have a string with a mass of 0.0127 kg. You stretch the string with a force of 9.19 N, giving it a length of 1.83 m. What is the wavelength of the standing wave you create
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