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You have a mass of 87 kg and are on a 50-degree slope hanging on to a cord with a breaking strength of 221 newtons. What must be the coefficient of static friction to 2 decimal places between you and the surface for you to be saved from the fire?
Light passes through a 230 lines/mm grating and is observed on a 1.0m wide screen located 1.3m behind the grating. Three bright fringes are seen on both sides of central maximum.
How to find out potential energy
Which kinetic energy equals to rotational motion
At the very bottom of the circle, a too sharp knife is suddenly inserted to cut the string directly below the point of support. How far to the right of where the string was cut does the ball hit the floor.
A body of mass 200 g is acted upon by a force of 20 n. Find the acceleration of the body. If the body above is having a volume of 1000 cm3 estimate its density in kg/m2.
At a soft drink dispenser, a restaurant patron put 0.2 kg of crushed water ice, at a temperature of ?5 C, into an insulating cup. [In fact, the ice was slightly colder before it left the machine, but its warming to ?5 C cooled the inside surface o..
Pulling a car from a ditch, To pull a car from a ditch, the driver ties one end of a rope to the car and the other to a tree 12.5 m away.
When one gallon of gasoline is burned in a car engine, 1.18 x 10^8 J of internal energy is released. Suppose that 0.99 x 10^8 J of this energy flows directly into the surroundings (engine block and exhaust system) in the form of heat. If 6.0 x 10^5 J..
What is the friction force that acts on the firefighter?
Question on center of gravity Discover speed of each block
What distance does baseball move before its release
Calculate escape velocity for an object started at the surface of the earth, going straight up. Neglect any complications due to the earth turning.
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