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A bird flying straight upward at 7 m/s drops a berry when it is 200 m above the ground. How fast is the berry going when it hits the ground (neglect air resistance).
The balloon contains 0.30mol of helium starts at a pressure of 110 kPa and rises to an altitude where the pressure is 70.0 kPa, How much work does the gas in the balloon do
Two lenses that are L = 42 cm apart are used to form an image, as shown in figure. Find the distance from lens and magnification of the image.
A bubble with a volume of 1.0 cm 3 forms at the bottom of a lake that is 20.0 m deep. The temperature at the bottom of the lake is 10.0 °C. The bubble rises to the surface where the temperature is 25.0 °C. Suppose that the bubble is small sufficient..
A map in a pirate's log gives directions to the location of a buried treasure. The starting location is an old oak tree. How far (in paces) from the oak tree is the spot at which digging occurs
A certain species of ionized atoms produces an emission line spectrum according to the Bohr model, Find the next-to-the-longest wavelength in the series of lines
A positron is a particle with the same mass and magnitude charge as an electron, but a positron has a positive charge. how fast is the positron moving
A coyote can locate a sound source with good accuracy by comparing the arrival times of a sound wave at its two ears. What is the distance between the bird and the coyote's left ear
an astronaut weighs 1000N on the surface of the earth(radius = 6.38*10^6m) what is the weight of the astronaut at the elevation of 620 km above the earth's surface
A point charge causes an electric flux of (-300)N*m2/C to pass through a spherical Gaussian surface of11.0 cm radius centered on the charge. how much flux would pass through the surface
Pam, wearing a rocket pack, stands on frictionless ice. She has a mass of 45 kg. The rocket supplies a constant force for 22.0 m, and Pam acquires a speed of 62.0 m/s.
A wire loop bent into the shape of a square with 1.50 m sides is centered on the origin of the xy-plane. what current is present in the square wire
A gymnast of mass 69.0 kg hangs from a vertical rope attached to the ceiling. You can ignore the weight of the rope and assume that the rope does not stretch. Use the value 9.81 for the acceleration of gravity.
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