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A 94- astronaut and a 1200- satellite are at rest relative to the space shuttle. The astronaut pushes on the satellite, giving it a speed of 0.25 directly away from the shuttle. Seven-and-a-half sec
A 40.0 rock slides on a rough horizontal surface at 7.00 and eventually stops due to friction. The coefficient of kinetic friction between the rock and the surface is 0.300. What average thermal pow
A house is 100.0 ft long and 32.0 ft wide, and has 8.0 ft high ceilings. What is the volume of the interior of the house in cubic meters and in cubic centimeters?
Assuming each of the remaining pigs squeal at their original level after 73 of their companions have been removed, what is the decibel level of the remaining pigs?
Assume that the masses of the chains, pulleys, and ropes are negligible and the crate is rising with an acceleration of 2.6 m/s2. 1. Determine the force.
After the flute has passed, the observer hears the sound with a frequency of 415 Hz. What is the speed of the train? The speed of sound in air is 343 m/s.
A charge of -3.0 nC is at the origin and a second charge of 10.0 nC is at x = 5.00 m. Find the magnitude and direction of the electric field halfway in between the two charges.
What mass must be hung from this end of the string to produce two loops of a standing wave?
Suppose 8.00 g of hydrogen is separated into electrons and protons. Suppose also the protons are placed at the earth's North Pole and the electrons are placed at the South Pole. What is the resulti
The crate does not slip relative to the truck. Obtain the magnitude of the static frictional force that the truck bed exerts on the crate.
About how many kilograms of seawater would be needed per year to provide the hydrogen fuel for fusion reactors to meet the energy needs of the United States?
What are the various properties of a substance that determine it's heat capacity?
Two equally charged bodies are tied to a point each by a light string of 0.4m. They were found to be deflected with angle of 40 degrees. What is the force between them?
A guitar string is 91 cm long and has a mass of 3.6 g. From the bridge to the support post (= L) is 60 cm, and the string is under a tension of 551 N. What is the frequency of the fundamental?
If a flight mechanic drops a wrench from a high flying jumbo jet it crashes to Earth If an astronaut on the orbiting space shuttle drops a wrench does it crash to Earth also?
Starting from rest, a boat increases its speed to 4.02 m/s with constant acceleration. What is the boat's average speed?
Starting from rest, a boat increases its speed to 3.74 m/s with constant acceleration. What is the boat's average speed?
If the region containing the electric field is .08m long, what fraction of the electron's initial kinetic energy will be lost in that region?
The lighter fragment goes directly forward, and the explosion releases 1.50 × 103 {rm J} of mechanical energy to the fragments. Find the magnitude of the velocity of the heavier fragment relat
How far below the top surface would the medallion appear if the observer (not wearing goggles) and the block were under water?
The infamous chicken is dashing toward home plate with a speed of 5.8 when he decides to hit the dirt. The chicken slides for 1.1 , just reaching the plate as he stops (safe, of course). What is th
When thermal equilibrium of this closed system is established, its temperature is found to be 23 °C. Determine the original mass of the steam at 100 °C.
For 0 t 2.0 multiplied by 10-3 s, where t is in seconds. Find the magnitudes of the following: the average force exerted by the player's foot on the ball during the period of contact,
A constant force of 6.15 N acts on a 3.20 kg object for 10.0 s. What are the changes in the object's momentum and velocity?
A 20 gram bullet traveling at 208 m/s is fired into a 0.453 kg wooden block anchored to a 100 N/m spring. How far is the spring compressed to the nearest thousandth of a meter?