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Question1
Jim's dog Sparky runs 45.0 northeast to a tree, then 70.0 west to a second tree, and at last 25.0 south to a third tree.
1) Compute Sparky's net displacement vector.Enter the east and north components of the net displacement
2) determine magnitude of Sparky's net displacement. (Meters)
3) compute direction of Sparky's net displacement (degrees)
Question2
A curve of radius 54 m is banked for a design speed of 100 km/h. If coefficient of static friction is 0.30 (wet pavement), at what range of speeds be able to a car safely make the curve? Find out min and max?
Initially, an object is 12cm to the left of a convex lens of focal length 8.2cm, then a concave (diverging) lens of local length -9cm is placed 20cm to the right of the convex lens, find the Image distance from concave lens
Peter and Carter are dropping rocks into a stream from a bridge at a height of 28 m above the water below, As Meg emerges from the water below she is struck by both rocks. Calculate the speed of each rock at impact with Meg
Water drives a waterwheel (or turbine) of radius R = 3.0 m as shown in the figure. The water enters at a speed v1 = 6.5m/s, What is the torque the water applies to the waterwheel
In the movie The God's Must Be Crazy, a bottle is thrown from a cliff overlooking the Indian Ocean. How far from the bottom of the cliff does the base hit the water
What is braking distance for the first train
A bullet with mass m = 5.21 g is moving horizontally with a speed v = 373 m/s when it strikes a block of hardened steel with mass M = 14.8 kg, What was the change in kinetic energy (J) of the bullet
A block of wood, with density 780 kg/m3 has a cubic shape with wides 0.330 m long. A rope of negligible mass is used to tie a piece of lead to the bottom of the wood. What is the mass of the lead
The largest moon of Pluto, Charon, was discovered in 1979. Charon is in a circular orbit of radius 19,600 km around Pluto, What is the total mass of the Pluto-Charon system
An 80.0 kg painter climbs a 2.45 m ladder that is at an angle of 25 degrees with a vertical wall. What is the work done by gravity as the painter climbs the ladder
A whale sends an undersea signal to its mate and then gets a response 4.5 seconds later. How far away is the whales mate
A ski starts from rest and slides down a 22° incline 75 m long. If the coefficient of friction is 0.09, what is the ski's speed at the base of the incline? If there is snow level at foot of the incline and it has the same coefficient of friction, ..
A bat flying in a cave emits a sound and receives its echo 0.37s later. How far away is the cave wall? (Hint: The sound has to travel to the wall and then back again. Use 340 m/s for the speed of sound.)
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