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Cory Cooper
Physics
Which compound is composed of oppositely charged ions
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Junior Montgomery
Physics
Sara, who weighs 66 kg, is on a guilt trip after eating a 788-Calorie (788 kcal) breakfast of pancakes loaded with fruits, cream, and syrup. She decides to work out before going to her weekly weight-watchers' meeting. If the height of a single stair is 12 cm, and her body is only 25% efficient in converting chemical energy to mechanical energy, determine the number of stairs Sara must climb to cancel out the Calories consumed.
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Ryan Pearson
Physics
Can you get sunburned through glass?
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Tatum Nolan
Physics
Which statement about a signal transduction pathway is true?
a. A signal transduction pathway provides a means for a signal molecule to pass through the cell membrane and initiate a chain of events inside the cell.
b. A signal transduction pathway is nonspecific, which allows the cell to use the same pathway for many different environmental signals.
c. A signal transduction pathway allows a cell to change its external environment to make it more suitable for its needs.
d. A signal transduction pathway allows a single signal molecule to initiate a chain of events that amplify the signal at many steps inside the cell.
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Nancy Combs
Physics
If a car is traveling on the highway at a constant velocity, the force that pushes the car forward must be A. greater than the force of friction exerted upon the car. B. less than the force of friction exerted upon the car. C. greater than the weight of the car. D. equal to the force of friction exerted upon the car.
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Missie
Physics
Tom stops using a new skin cream for five days to determine if the cream is the cause of a recent rash. What stage of the scientific method is Tom using?
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Tammy
Physics
Use your observations to determine qualitatively how the strength of the electric interaction between charged objects depends on the distance between them. Explain your reasoning (this is trickier than it might seem at first).
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Holder
Physics
Far from any other masses, two masses, m1 and m2, are interacting gravitationally. The value for the mass of m1 suddenly doubles. What happens to the value of the gravitational force that mass m2 exerts on mass m1?
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Jadyn Park
Physics
Which of the outer planets are most like Earth? How?
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Jean Mosley
Physics
The pressure inside a champagne bottle can be quite high and can launch a cork explosively. Suppose you open a bottle at sea level. The absolute pressure inside a champagne bottle is 6 times atmospheric pressure; the cork has a mass of 7.5 g and a diameter of 18 m. Assume that once the cork starts to move, the only force that matters is the pressure force. What is the acceleration of the cork? Express your answer with the appropriate units.
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Baron Trevino
Physics
Using a cathode ray tube, Thomson confirmed that
atoms must have an overall positive charge.
atoms are made of particles that have a negative charge.
electrons in atoms must have varying amounts of energy.
electrons are only found in the nucleus.
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Gemma Huffman
Physics
A ball is rolled along the inside of a partial hoop lying flat on a table. which path will the ball follow when it gets to the end of the hoop?
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Camden Santos
Physics
What pattern of material movement found in the Earth system tracks how an element moves from living to nonliving parts?
a. rock cycle
b. calcium cycle
c. carbon cycle
d. none of the above
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Joslyn Miles
Physics
Why is the monolith el capitan in yosemite national park more resistant to erosion than other igneous plutons in the park?
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Adalynn Monroe
Physics
Block A weighs 1.20 N and block Bweighs 3.60 N. The coefficient of kinetic frictionbetween all surfaces is 0.300. Find the magnitudeof the horizontal force F necessary to drag blockB to the left at constant speed a) if A rests on Band moves with it and b) if A is held at rest.
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