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Two balloons (m = 0.028 kg) are separated by a distance of d = 0.9 m. They are released from rest and observed to have an acceleration of a = 1.9 m/s2 toward each other. Assume the two balloons are point charges and have equal but opposite charges. How many electrons are respnsible for the charge, N?
A common flea that has a mass of 0.008 g can jump vertically as high as 19 cm. Estimate the wavelength for the flea immediately after takeoff
A man observes snow falling vertically when he is at rest, but when he runs through the falling snow at a speed of 5.50 m/s, Find the speed of the snow relative to the earth
A box is hanging from a chain having a mass of 60 kg. The box has a mass of 78 kg. Find the tension in the top of chain and the bottom of the chain.
A stone is thrown horizontally at a speed of 4.9 m/s from the top of a cliff 89.5 m high, how long does it take the stone to reach the bottom of the cliff.
A cubical Gaussian surface surrounds charges, q1=6.0 x 10-12C, What is the electric flux passing through the surface
A 1650-kg car is travelling at 31.2 m/s. How fast must a 91.0-kg bicycle and rider be travelling to have the similar kinetic energy as the car.
An inductor (L = 400 mH), a capacitor (C = 4.43 ?F), and a resistor (R = 500 ?) are connected in series. Calculate the required peak voltage
To protect their young in the nest, peregrine falcons will fly into birds of prey (such as ravens) at high speed. What was the raven's speed right after the collision
As a 5-kg block travels around a 0.6-m radius circle it has an angular speed of 14 rad/s. find The magnitude of its angular momentum around the origin
There are two coherent microwave sources in the x-y plane. These sources are emitting in phase at a wavelength of ? = 1.00 cm. where is the first source located on the y axis
The pulley is frictionless and of negligible mass. The coefficient of kinetic friction between mass 1 and teh ramp is 0.25. Evaluate the change in kinetic energy of the 50 kg block as it moves from a to b, a distance of 20 m
The greatest ocean depths on earth are found in the Marianas Trench near the Philippines, where the depth of the bottom of the trench is about 11.0 km. Calculate the pressure due to the ocean at a depth of 9.5 km
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