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 15:20
A20 cm long spring is attached to a wall. the spring stretches to a length of 22 cm when you pull on it with a force of 100 n. what is the spring constant
Answers: 3
Physics, 22.06.2019 19:20
The dipole moment of the water molecule (h2o) is 6.17x10^-30 c.m. consider a water molecule located at the origin whose dipole moment p points in the +x-direction. a chlorine ion ( of charge-1.60x10^-19c , is located at x=3.00x10^-9m . assume that is much larger than the separation d between the charges in the dipole, so that the approximate expression for the electric field along the dipole axis can be used. a) find the magnitude of the electric force that the water molecule exerts on the chlorine ion. b) what is the direction of the electric force. -x-direction or +x-direction c) is this force attractive or repulsive?
Answers: 1
Physics, 23.06.2019 02:00
How is an electron dot structure used to represent a covalent bond?
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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