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Assume a 370-g kookaburra (a large kingfisher bird) picks up a 75-g snake and raises it 2.4 m from the ground to a branch. How much work, in joules, did the bird do on the snake?
he box is taken up a mountain where the air pressure outside the box is 8.00 104 Pa. The inside of the box is completely evacuated. Illustrate what is the magnitude of the force required to pull the lid off the box?
An experimenter bombards a target of 54Cr with alpha particles such as 4He + 54Cr -> p+ 57Mn Suppose the incoming alpha particle has 26MeV kinetic energy in the lab, What is the kinetic energy of the detected proton
A 62.0 m length of insulated copper wireis wound to form a solenoid of radius 1.7cm. Treating each turn of the solenoid as a circle, how many turns can be made with the wire
Assume that at a point x the wind from the surface to z= 1 kmis westerly at 10 m/s, What is the vertical velocity at a height of1 km
a ocean waves move toward the beach with a speed of 8.90 ms and a crest-to-crest separatiion of 15.0 m. you are in a
Two spaceships approach each other, each moving with the same speed as measured by an observer on the Earth. find the speed of each spaceship as measured on Earth
a diffraction pattern is produced on a screen 148 cm from a single slit using monochromatic light of wavelength 550
Someone standing at the edge of a cliff throws one ball straight up and another ball straight down at the same initial speed. Neglecting air resistance, the ball to hit the ground below the cliff by the greater speed will be the one thrown downward.
a uniform 35 kg ladder length 7.90 m leans against a smooth vertical wall. the base of the ladder is 12 ft from the
X-rays of wavelength 0.012 nm scatter from a free electron at scattering angle of 45^0. Find the energy and momentum of the recoiled electrons
double stranded dna molecule negatively charged with a charge density of -e per nanometer1. what is the electric field
A spring with a force constant of 1495 N/m is compressed 11.1 cm. Find the work done by the force compressing the spring
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