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Having landed on a newly discovered planet, an astronaut sets up a simple pendulum of length 1.57 meter and finds that it makes 302 complete oscillations in 593 second. The amplitude of the oscillations is very small compared to the pendulum's length. Find the gravitational acceleration on the surface of this planet?
Answer in units of m/s2.
A circular window with 0.5m radius on a submarine can withstand a maximum pressure of 8900 N/m^2. How deep can the sub safely dive
A 4.5kg ball with a velocity of 4.0m/s in the+x-direction collides head-on elastically with a stationary 1.8kg ball. What is the speed of the first ball after the collision
2.90 mol of gas is at a temperature of -180 C and fills a 3.90 L container. What is the gas pressure
A bird stands on a dc electric transmission line carrying 3300A (Figure 1) . The line has 2.7×10?5? resistance per meter, and the bird's feet are 3.5cm apart
Two identical probes are sent along the same path toward a neutron star. A neutron star is very dense, packing as much as 2 solar masses into a sphere with a radius on the order of 10 km. At the moment shown, the two probes are 59.7 km and 133 km ..
A tandem (two-person) bicycle team must overcome a force of 155 N to maintain a speed of 9.10 m/s. Find the power required per rider
A walkway suspended across a hotel lobby is supported at numerous points along its edges by a vertical cable above each point and a vertical column underneath. how much does the point move down
A block is pushed up a frictionless 30° incline by an applied force as shown. If F = 25 N and M = 3.0 kg, what is the magnitude of the resulting acceleration of the block
A state highway patrol car radar unit uses a frequency of 9*10^9 Hz. What frequency difference will the unit detect from a car receding
A jet airplane in level flight has a mass of8.62104kg, and the two wings have an estimated total area of89.0m2. If the speed of air under the wings is232m/s, what is the speed of the air over the wings
A proton is at the origin and an electron is at the point = 0.45 , = 0.31 . Find the electric force on the proton.
An electric field of 8.60 x 107 V/m is desired between two parallel plates, each of area 35.0 cm2 and separated by 2.45 mm of air. What charge must be on each plate.
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