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In a diesel engine, the piston compresses air at 306 K to a volume that is 0.0622 of the original volume and a pressure that is 48.2 times the original pressure. What is the temperature of the air
A blacksmith heats a 1.9 iron horseshoe to 460, then plunges it into a bucket containing 20 of water at 19. What is the final temperature?
On a very muddy football field, a 120 kg linebacker tackles an 75 kg halfback. Immediately before the collision, the linebacker is slipping with a velocity of 8.6 m/s north and the halfback is slidi
What is the elastic potential energy of the system when the 2.0-kg block is replaced by a 4.1-kg block?
A 67.0 kg base runner begins his slide into second base when moving at a speed of 3.7 m/s. The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just
A 47.0- person takes a nap in a backyard hammock. Both ropes supporting the hammock are at an angle of 16.0 above the horizontal. Find the tension in the ropes.
A carbon resistor is to be used as a thermometer. On a winter day when the temperature is 4.00, the resistance of the carbon resistor is 217.4 . What is the temperature on a spring day when the resi
A superhero flies 156 m from the top of a tall building at an angle of 35 ? below the horizontal. What is the vertical component of the super-hero's displacement?
Suppose a 64-kg boy and a 48-kg girl use a massless rope in a tug-of-war on an icy, resistance-free surface. If the acceleration of the girl toward the boy is 3.0 m/s2, find the magnitude of the ac
A baseball is thrown at an angle of 28 degrees relative to the ground at a speed of 25.6m/s. The ball is caught 55.3841m from the thrower. The acceleration due to gravity is 9.81m/s square. How lon
An electric dipole p makes an angle of 30° with a uniform electric field of magnitude 300 N/C. If the torque on the dipole is 3.00 × 10-12 N · m then calculate the magnitude of the
A rock of mass 47 kg accidentally breaks loose from the edge of a cliff and falls straight down. The magnitude of the air resistance that opposes its downward motion is 252 N. What is the magnitude
A 160.0 g ball on a 70.7 cm long string is swung in a vertical circle about a point 184.0 cm above the floor. The string suddenly breaks when it is parallel to the ground and the ball is moving upw
A projectile, fired with unknown initial velocity, lands 18.8 s later on the side of a hill, 3140 m away horizontally and 433 m vertically above its starting point. What is the vertical component o
Sam, whose mass is 60 kg, takes off across level snow on his jet-powered skis. The skis have a thrust of 280 N and a coefficient of kinetic friction on snow of 0.15. Unfortunately, the skis run out
A nurse applies a force of 4.40 N to the piston of a syringe. The piston has a radius of 4.00 mm. What is the pressure increase in the fluid within the syringe?
A man pushes horizontally on a desk that rests on a rough wooden floor. The coefficient of static friction between the desk and floor is 0.750 and the coefficient of kinetic friction is 0.600. The
Find the net downward force on the tank's flat bottom, of area 1.60 m^2, exerted by the water and air inside the tank and the air outside the tank.
What is the rms speed of nitrogen molecules contained in an 9.0-{rm m}^3 volume at 2.9 atm if the total amount of nitrogen is 2000 mol?
If a bird were to start out from the origin (where the student starts) and fly directly (in a straight line) to the school, what distance would the bird cover?
A proton orbits a long uniformly charged wire along a circular path. It makes 1.0 million revolutions per second. The radius of the orbit is 1.0 cm. What is the wire's linear charge density?
A spot of paint on a bicycle tire moves in a circular path of radius 0.33 {rm m}. When the spot has traveled a linear distance of 1.70 m, through what angle has the tire rotated? Give your answer in
Calculate the volume of a spherical balloon which has a surface area of 0.0681 m2
A force of 2N is used to propel a toy car across the ramp at a constant velocity of 20cm/sec. What is the force of friction the car experiences with the ramp
An archer shoots an arrow horizontally at a target 15 m away. The arrow is aimed directly at the center of the target, but it hits 60 cm lower. What was the initial speed of the arrow? (Neglect air