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A diver 40 m deep in 10 C fresh water exhales a 1.5 cm diameter bubble.What is the bubble's diameter just as it reaches the surface of the lake, where the water temperature is 20 C Assume that the
Find the relative velocity (magnitude and direction) of the sailboat as observed by the passengers on the oceanliner. Determine the directional angle relative to due north.
A 3.0mu*F capacitor, a 9.0mu*F capacitor, and a 19mu*F capacitor are connected in parallel. What is their equivalent capacitance?
A car is moving at 487 m/s. The driver sees a pothole in the road 31 m ahead and applies the breaks. The car is traveling at 29 m/s when it hits the pothole. For how long did the car decelerate before
At the bottom her speed is precisely two-thirds what it would have been if the slide had been frictionless. Calculate the coefficient of kinetic friction between the slide and the child.
Calculate the adiabatic exponent of mixture of two gasses and b. a and b have adiabatic exponent ya and yb respectively. and molar fraction fa and fb respectively.
A 13 kg block is at rest on a level floor. A 405 g glob of putty is thrown at the block such that it travels horizontally, hits the block, and sticks to it. The block and putty slide 15 cm along the
A tank having a volume of 0.100 m3 contains helium gas at 130 atm. How many balloons can the tank blow up if each filled balloon is a sphere 0.300 m in diameter at an absolute pressure of 1.45 atm?
20000N, 2.47 meter cannon, 40 degrees above horizontal, 74 meters/second, conservation of energy, what sized cannon ball, in kg, must be used?
Mr. Physics drops a rock down a 250 meter deep well. How soon after he drops the rock does he hear it hit the bottom of the well?
A car drives straight off the edge of a cliff that is 47 m high. The police at the scene of the accident observed that the point of impact is 122 m from the base of the cliff. How fast was the car t
A spaceship moves away from Earth at a speed 0.874c and fires a shuttle craft that then moves in a forward direction at 0.21c relative to the ship. The pilot of the shuttle launches a probe forward
Object A, which has been charged to +10nC, is at the origin. Object B, which has been charged to -22nC, is at (x,y)=(0.0cm,2.0cm). What is the magnitude of the electric force on object A? What is t
Suppose you have 3.0mol of O2 gas. How many coulombs of positive charge are contained in this gas in the atomic nuclei?
A baseball pitcher can throw a ball with a speed of 40. He is in the back of a pickup truck that is driving away from you. He throws the ball in your direction, and it floats toward you at a lazy 30
The orbit of earth's moon has a period of 27.3 days and a radius (semi-major axis) of 2.56 x 10-3 A.U. (= 3.84 x 105 km). What is the mass of Earth? What are the units?
A stone is dropped from rest into a well. The sound of the splash is heard exactly 2.30 s later. Find the depth of the well if the air temperature is 14.0°C.
Children in a tree house lift a small dog in a basket 5.50 m up to their house. If it takes 191 J of work to do this, what is the combined mass of the dog and basket?
A hockey puck slides off the edge of the table with an initial velocity of 20.0m/s. the height of the table above the ground in 2.0m. what is the magnitude of the verticle component of the velocity
Vehicle(mass = 2500 kg) treviling in the opposite direction. in the collision, the two vehicles come to a halt . At what speed was the sport utility vehicle traveling?
A woman is pushing a box along the ground. She is exerting a horizontal force of 156 N on the box. The box has a mass of 84.0 kg, and has an opposing horizontal frictional force of 135 N. What is t
The latent heat of vaporization for helium is 2.1x104 J/kg. What mass of liquid helium boils away through a venting valve in one hour?
A 25 kg solid door is 220 cm tall, 94 cm wide. What is the door's moment of inertia for rotation about a vertical axis inside the door, 13 cm from one edge?
The central bright fringe broadens to a width of 2.1 cm. What is the width of the second slit? It may be assumed that is so small that sin is approximately equal to tan.
If this energy were used to accelerate the ice from rest, what would be the linear speed of the ice? For comparison, bullet speeds of 700 m/s are common.