Which of the following is an example of what happens when water freezes? A. Ice formed floats B. Ice formed sinks C. Ice does not form
What is a cloud of gas and dust in space, often where stars are born? square
What receives radio waves from space objects such as quasars? GPS equipment Landsat satellites VI BI equipment navigation satellites
Which term is described when measuring the number of liters of gas trapped in a bottle? pressure mass volume horespower
The Sun fuses: helium into hydrogen hydrogen and methane hydrogen into oxygen helium and oxygen
Water has the property of having a high specific heat. Which of the choices represents this property? Water in lakes and streams flows to the oceans faster causing more erosion. All marine animals can live at any ocean depth because the water is the same temperature. Pond water cools down quickly at night causing animals to come out of hiding. Pond water temperatures change little from day to night so pond organisms aren't exposed to extreme temperatures differences.
Calculate the resistance of a 600 kcmil copper conductor at 75^circ C given: Kvalue=12.6 at 75^circ C and length=4473feet (Round the FINAL answer to three decimal places.)
12. Which metric units are commonly used to measure, length, volume, and mass. (You should lure a total of 3 answers) square
A measurement of how fast an object is moving Speed Acceleration Vector Mass
An object travels 100 m North then 50 m South. What is its total displacement (not distance)? 50 m North 50 m South 150 m 150 m North
$\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.
