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A plastic block of dimensions 2.5 cm x 3.8 cm x 4.0 cm has a mass of 28.0 g. What is the density of the block
An object is initially placed on the optical axis 22.6 cm to the left of a convex lens that has a focal length of 13.1 cm. what is the new image distance
A camera has a lens with a focal length of 24.9 cm. how far from the film should the lens be placed
A disk with a rotational inertia of 5.6 kg?m2 and a radius of 0.53 m rotates on a frictionless fixed axis perpendicular to the disk, The angular acceleration of the disk in rad/s2 is:
A person pushes with a force of 10.0 N on a stick pin to try to push it into a bulletin board. find the average pressure (in Pascals) on the board at the tip of the pin
If the mass of Jupiter is 1.8 x 10^27 kg, then find the escape velocity for an object launched from the surface of Jupiter
A plastic block of dimensions 2.5 cm x 3.8 cm x 4.0 cm has a mass of 28.0 g. What is the density of the block? If placed into a cup of water, will the block float or sink
An object has a volume of 0.25 m^3 and weighs 3000 N. What will be its apparent weight when submerged in water
A 500 kg mass is released at rest from a distance of two Earth radii above the surface of the Earth. Find the speed of the mass
An extreme distance runner is having an easy training day and runs 34 km west over 3 hours, Calculate his/her distance, displacement, speed and velocity for the entire training session
A small object is placed to the left of a convex lens and on the optical axis. What is the position of the image formed by the lens
A fish takes the bait and pulls on the line with a force of 1.8 N. The fishing reel, which rotates without friction, What is the angular acceleration of the fishing reel
The height of a helicopter above the ground is given by h = 3.35t3, where h is in meters and t is in seconds. How long after its release does the mailbag reach the ground
Suppose that you find the volume of all the oceans to be 1.4\times10^9\; \rm km^3 in a reference book. What is this volume in cubic meters
The crankshaft in a race car goes from rest to 3540{\rm rpm} in 3.0{\rm s}. What is the crankshaft's angular acceleration
Two skaters, a man and a woman, are standing on ice. Neglect any friction between the skate blades and the ice. The mass of the man is 86 kg, Determine the acceleration of the man
A 29 kg sled starts from rest at the top of a frictionless hill inclined at an angle of 20 degrees to the horizontal. find the normal force on the sled due to the hill
A popular amusement park ride looks like a huge cylinder of radius 2.3 m, where people stand up along the vertical walls on top of a floor which can drop away. find the minimum rotations per second
A 1000 kg aircraft going 25 m/s collides with a 1500 kg aircraft that is parked and they stick together after the collision. how far did they skid
To stop a car, first you require a certain reaction time to begin braking; then the car slows under the constant braking deceleration. determine the magnitude of the deceleration
You are arguing over a cell phone while trailing an unmarked police car by 25.0 m; both your car and the police car are traveling at 120 km/h. What is the separation between the two cars when your at
Two bumper cars are driving directly toward one another. The first car, mass m1 = 150 kg, What is the total momentum of the system
A boy kicks a ball horizontally near the edge off a boardwalk, with an initial speed of 9.0 m/s. Determine the height of the boardwalk above the water
An x-ray beam with wavelength 0.210nm is directed at a crystal. As the angle of incidence increases, find the spacing d between the planes of the crystal
Suppose you make a cup of tea with boiling water straight from a kettle, but then the phone rings, Estimate the change in entropy of the room during the cooling of the tea