Physics, 25.06.2019 08:40 abbygriffin2009
As you drive your car along a country road at night, a deer jumps out of the woods and stands in the middle of the road ahead of you. this occurs just as you are passing from a 55-mi/h zone to a 50-mi/h zone. at the 50-mi/h speed-limit sign, you slam on the car's brakes, causing them to lock up, and skid to a stop inches from the startled deer. as you breathe a sigh of relief, you hear the sound of a police siren. the policeman proceeds to write you a ticket for driving 56 mi/h in 50-mi/h zone. because of your preparation in physics, you are able to use the 33.5-m-long skid marks that your car left behind as evidence that you were not speeding. based on your evidence, at what speed were you actually driving? (the coefficient of friction between between automobile tires and dry concrete is 0.80.)
Answers: 1
Physics, 22.06.2019 02:00, Kyliehayden05
Which statements about tornadoes are true? check all that apply. (a) about 12,000 tornadoes hit the united states every year. (b) a tornado looks like a funnel. (c) tornadoes are deadly atmospheric storms that cause millions in damages each year. (d) tornadoes can reach wind speeds of more than 300 miles per hour. (e) kansas is the state with the most tornadoes. (f) you will always notice a funnel before a tornado strikes.
Answers: 2
Physics, 22.06.2019 09:30, morgan15776
Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z
Answers: 3
Physics, 22.06.2019 11:50, morenodonaldo762
The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e
Answers: 1
Physics, 22.06.2019 21:10, ineedhelp2285
An athlete swings a ball, connected to the end of a chain, in a horizontal circle. the athlete is able to rotate the ball at the rate of 8.13 rev/s when the length of the chain is 0.600 m. when he increases the length to 0.900 m, he is able to rotate the ball only 6.04 rev/s. (a) which rate of rotation gives the greater speed for the ball? 6.04 rev/s 8.13 rev/s (b) what is the centripetal acceleration of the ball at 8.13 rev/s? m/s2 (c) what is the centripetal acceleration at 6.04 rev/s? m/s2
Answers: 2
As you drive your car along a country road at night, a deer jumps out of the woods and stands in the...
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