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An airtight box has a removable lid of area 2.46 × 10-2 m2 and negligible weight. The box is taken up a mountain where the air pressure outside the box is 8.55 × 104 Pa. The inside of the box is completely evacuated. What is the magnitude of the force required to pull the lid off the box?
find the moment of inertia about the z axis of the hemispherical shell of z= (2^2-x^2-y^2)^(1/2), derive the unit normal vector for surfaces given by y=g(x,z_ x=h(y,z)
A proton is moving parallel to a uniform electric field. The electric field accelerates the proton and increases its linear momentum to 3.00 10-23 kg·m/s from 1.30 10-23 kg·m/s in a time of 6.80 10-6 s. What is the magnitude of the electric field?
A boat crosses a 500 m river. The water run at 5.9527 m/s due east. The boat is able to travel at 5 m/s relative to the water. what is the net displacement along the river bank
A parallel plate capacitor is composed of two square plates, 13.5 cm on a side, separated by an air gap of 0.80 mm, Find the new energy stored in the capacitor
Illustrate what is the horizontal component of the superhero’s displacement? Draw the vectors to scale on a graph to determine the answer.
The escape velocity of a bullet from the surface of planet Y is 1951 m/s. Calculate the escape velocity from the surface of planet X
A person with perfect pitch sits on a bus bench listening to the 450 Hz horn of an approaching car. If the person detects the frequency of 470 Hz, how fast is the car moving.
A particle's acceleration is described by the function ax =(10-t)m/s^2, where t is in s. At what time is the velocity again zero
A set of jumpers cables used to start a car from another car's batterty is connected to the terminals of both batteries. What is the force per unit length on the cables
A -10.0 nC point charge and a +20.0 nC point charge are 15.0 cm apart on the x-axis. What is the direction of the electric field at the point on the x-axis, between the charges, where the electric potential is zero
How far from the point of the drop will the rock hit the ground.
If the slope is not frictionless so that the skier has a final velocity of 6 m/s, compute the force of friction (assuming it is constant), and the coefficient of kinetic friction.
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