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Dr Jeeves has invented a new kind of heat engine that operates using a pool of molten copper at 1083 degrees celcius and a block of solid lead at 327 degrees celcius. How much power is produced by t
Consider a pump that is required to compress air in a factory. The cylinder in the pump has an inner diameter of 2.00 cm and length 60.0 cm. Calculate the volume and temperature of the compressed ai
Imagine that we add 250 J of thermal energy to 1 liter (L)(1000cm^3) of air initially at room temperature and normal pressure. By how much does its pressure increase
A man is to pull a 50 .0 kg crate across a level terrain with a force of 50.0 N. What is the coefficient of kinetic friction, if the work done by friction is - 4.30 x 102 J
A copper wire, 1 m long, has a density of 0.020 g/cm and vibrates in 4 segments when under tension produced by a 250 g hanging mass
A 1.5 V battery is rate at 1,800 milliamp hrs (mAh). How much electrical energy (in joules) is stored in the battery when it is new
Unpolarized light passes through 5 parallel ideal polarizing filters. What is the ratio of the initial intensity to the final intensity of the light
Three separately located capacitors (capacities: C1, C2, C3) with the electric charges: Q1, Q2, Q3 initially are not connected by conductors
A soldier has a huge contraption that notches a large 4 kg arrow (it looks more like a lance) in a massive bow and uses a winch system to draw the arrow back to set the bow. What is the speed of the
A steel cable with a total length of 29.2 m and total mass of 74 kg is connected to two poles. Calculate the wavelength of the resulting wave on the cable
A rail car that weighs 44 N is accelerated at 6.4 m/s/s for 2.9 seconds. How much work is done on the rail car
As a space craft approaches a planet, the rocket engines on it are fired to slow it down so it will go into orbit around the planet. how long must the engines be fired
An ultralight plane and pilot have a total mass of 156 kg. what is the net force acting on the plane and pilot
2 blocks are sliding to the right across a horizontal surface. In case A, the mass of each block is 3.0 kg. Derive an expression for the contact force and acceleration
Under certain conditions, the human body can withstand an acceleration of 10 g%u2019s. What is the net force (in Newtons) acting on a person
At the end of an amusement park ride, you want the gondola to stop without the acceleration exceeding 2 g%u2019s. what is the maximum allowed braking force
As a baseball is being caught, its speed goes from 31 to 0 m/s in 0.005 seconds. The mass of the baseball is 0.145 kg. What is the force acting on the ball
A motorcycle and rider have a total mass of 289 kg the rider applies the brakes, What is the net force (in Newtons) on the motorcycle and rider combination
If an airplane accelerates at 10 m/s2 for 12.3 seconds. How far has the plane traveled in that amount of time
An undersea research chamber for aquanauts is spherical with an external diameter of 7.93 m. The mass of the chamber, when occupied, is 64800 kg. What is the buoyant force on the chamber
An insect sits on the edge of a spinning record that has a radius of 0.15 m. The insect%u2019s speed is 0.6 m/s. What is the insect's acceleration
The sun is 30 degrees above the horizon. It makes a 48 meter long shadow of a tall tree. How high is the tree
Migrating geese tend to travel in straight-line paths at approximately constant speed. How far is the goose from its original position
Solid cylindrical copper rod 0.2m long has one end maintained at temperature 20K, other end blackened and exposed to thermal radiation from surrounding walls at 500K. what is the temperature of the
A small object is placed to the left of a convex lens and on the optical axis. compute the position of the image formed by the lens