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
4. Provide evidence from the experiment that an object's motion depends on the forces acting on it and its mass.
The period and frequency of a wave are directly related. OTrue False
70. II A cubical box 20 cm on a side is constructed from 1.2-cm- thick concrete panels. A 100 W lightbulb is sealed inside the box. What is the air temperature inside the box when the light is on if the surrounding air temperature is $20^{\circ }C$
Strain and deformation are basically the same thing because it pertains to length. True False
33. II A $10m\times 14m$ house is built on a 12-cm-thick concrete slab. What is the heat-loss rate through the slab if the ground tempera- ture is $5^{\circ }C$ while the interior of the house is $22^{\circ }C$ ?
A sprinter runs at a constant speed of 8.0 meters per second on a circular track that has a radius of 40.0 meters. Part 1 What is the centripetal acceleration of the sprinter? $0.20m/s^{2}$ $0.40m/s^{2}$ $1.6m/s^{2}$ $5.0m/s^{2}$
Part 2 If the radius of the circular track is halved, what happens to the magnitude of centripetal acceleration of the sprinter? It doubles. It quadruples. It is reduced four times. It remains the same.
When bounce passing where should the ball bounce? Closer to the passer who threw the ball Closer to the person receiving the ball In the middle of both people Doesn't Matter
Why is a larger Newton's cradle less successful? The larger it is the more energy is transferred and transformed The larger it is the less energy is transferred and transformed
8) Which decay type does not change the mass number of the atom? Alpha decay Beta decay Both alpha and beta Neither alpha nor beta
