You should never submerge hot glass into cold water because it can __ Cool down too slow Shatter Not get clean all the way
What does a flat section on a velocity-time graph represent? Zero velocity Decreasing velocity Increasing velocity Constant velocity
Marie: I passed out because of the blast.What happened after I was pulled out of the lab? a) Evacuate the building b) Close the fume hood c) Extinguish the fire d) Trigger alarm and break the circuit
29. What are the energy levels around a nucleus called? A. Rings (D) B. Shells (F) C. Orbitals (I) D. Layers (V)
Which of the following impact the life cycle of the sun? Select all that apply. Chemical composition Hydrogen depletion Star origination Nuclear fission Nuclear fusion Solar cyce
Nuclear fission releases far more energy than nuclear fusion. True False
This happens when a larger nucleus, that is unstable, splits into smaller atoms. Nuclear fusion Nuclear fission Nuclear power Nuclear reactor
This happens when lighter nuclei fuse together to form a heavier nucleus. Nuclear fusion Nuclear fission Nuclear power Nuclear reactor
To the nearest pound, calculate the amount of force required to pull a 1,600 Ib. block of cast iron being dragged on steel. 375 lbs. 400 Ibs. 350 lbs. 450 Ibs.
15. To lift an object with a weight of 21,000 N how much force is needed on a piston with the area of 0.060m^2 if the platform being lifted has an area of 3.0m^2
$\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.
