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A driver is traveling at 30.0 m>s when he sees a moose crossing the road 80.0 m ahead. The moose becomes distracted and stops in the middle of the road. If the driver of the car slams on the brakes, what is the minimum constant acceleration he must undergo to stop short of the moose and avert an accident?
Compare the work that is done by Earth in stopping the comet to the 4.2 1015 J of energy that were released by the largest nuclear weapon ever built by calculating how many of these bombs would be equivalent to the energy of the comet.
Automobile windshield wipers can be used intermittently during rainfall. what determines the length of the intervals when the wiper is on and when it is off
A wedge of air is formed between two glass plates that are 9.0 cm long, with one edge touching, How far apart are the maxima for the reflected light with ? = 665 nm
A shopper in a supermarket pushes a loaded 28 kg cart with a horizontal force of 12N. How far will the cart move in 3.5s, starting from rest.
A billiard ball is moving in the x direction at 30.0 cm/s and strikes another billiard ball moving in the y direction at 40.0 cm/s. As a result of the collision, the second ball moves at 50.0 cm/s, and the first ball stops. In what final direction do..
Find the minimum diameter of an l = 18.9 m long brass wire that will stretch no more than 9.38 mm when a mass of 312 kg is hung on the lower end
Find the instantaneous acceleration of the center of mass, assuming that it is directed horizontally. Find the angle θ this force makes with the horizontal.
Based on EPA estimated carbon credits value of $70 per metric ton of carbon in 2050, estimate the financial value of the carbon market for the coal-fired electricity system in the US. Briefly put that dollar value in perspective.
A person goes hiking on the trails in a Park. The trail leads the hiker 6 km north, 4 km east, 2 km north, 2 km west and 5 km south. what is total distance traveled
In a friendly game of handball, you hit the ball essentially at ground level and send it toward the wall with a speed of 22m/s at an angle of 39 degrees above the horizontal. How high is the ball when it hits the wall
A dolphin in seawater at a temperature of 25 °C makes a chirp. How much time passes before it hears an echo from the bottom of the ocean, 208 m below.
A 7.0 kg box is raised from rest adistance of 1.0 m by a vertical forceof 120 N. Find the final kinetic energy of the box
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