Question 22 of 30 22. Including reaction time the stopping distance is more than 20 feet at 10 miles per hour, at 20 miles per hour it will be about: Choose one a. 30 feet b. 63 feet c. 40 feet d. 75 feet
Fixed resistors have only one ohmic value that cannot be changed or adjusted. True False
Gold is the best natural conductor of electricity, followed by copper, silver, and aluminum. True False
A force that acts away from the center of mass is also called Centric Coplanar Force Couple Concentric Moment
If an engine cannot be 100% efficient, what happens to the energy that is lost? It reproduces. It still exists, but in a different form. It disappears.
#29 This is what happens when your vehicle starts to slide on a thin layer of water or other liquid between your tires and the road. a) Speeding b)Hydroplaning c) Defensive driving
What is the energy transformation that occurs in a cel I phone in order to play music? Sound energy is transformed into chemical energy. Electrial energy is transformed into sound energy. Solar energy is transformed into thermal energy.
Theoretically in striking a ball for maximum distance all of the following should be maximized except mass of the club head projection angle velocity of the club head coefficient of restitution of the ball
Most cosmic rays penetrate deep into the Earth due to the speed at which they travel. True False
$\square $ Answer Bank KE: 1000.0 J PE: 3000.0 J KE: 0J $PE:4000.0J$ KE: 2000.0 J PE: 2000.0 J KE: 4000.0 J PE: 0J
Learning Log: How do you think you get something to have more kinetic energy?
If a UV light unit has four lamps in it, and each lamp is 7-watt, it is known as a __ 7-watt unit 28-watt unit 11-watt unit 3-watt unit
10. What is the mass of a meteorite that is traveling towards Earth at $1,760m/s$ with a momentum of $33,400kgm/s$
Where is the energy coming from in the lab (where does it start)? A Potential energy in the Cheeto B Potential energy in the water C Kinetic energy inside the water D Kinetic energy in the Cheeto
What should happen to the temperature of the water? A It stays the same B It goes down C It goes up
9. Your local weather report announces that the barometric pressure is 30.44 inHg. Convert this pressure to psi, atm torr, and Pa.
Express the temperature, 275.18 K in degrees Celsius. $548.33^{\circ }C$ $274.17^{\circ }C$ $2.03^{\circ }C$ $120.88^{\circ }C$ $22.78^{\circ }C$
Hubble's Law has led physicists and astronomers to the hypothesis that the universe is expanding. True False
Newton determined that the force of gravity on an object is proportional to its mass causing its mass to be canceled out (Newton's second law) and resulting in a constant acceleration. If the laws of physics are universal, then Newton should be able to apply his discoveries about gravity on Earth to the motion of the planets in our Solar System. Newton's third law says that for every force there is an equal reaction force in the opposite direction. What does this imply about the force of gravity associated with a person standing on the Earth? Choose one: A. The force of gravity on the person cancels out to zero. B. The Earth's gravity pulls downward on the person but also pushes upward on them. C. The Earth's gravity pulls downward on the person, and the person's gravity pulls upward on the Earth. D. There is twice as much gravitational force on the person than there would be if it weren't for Newton's third law.
