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Patrick Terry
Physics
Plants use sunlight as energy to convert carbon dioxide and water into glucose and oxygen what type of reaction is thing and describe how it happens
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Guest
Physics
What is a likely consequence of preventing prescribed burns to forest ecosystems?
a. natural wildfires will burn longer and hotter when they occur because there is more underbrush and fuel available.
b. forest ecosystems will remain healthier overall, due to retention of habitats.
c. home owners will be better protected against damage from natural wildfires.
d. natural wildfires will occur less frequentl?
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Layne Hanna
Physics
Acceleration is defined as the rate of change go which of the following 1. Velocity 2. Time 3. Displacement 4. Position
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Faulkner
Physics
A 0.690 kg snowball is fired from a cliff 8.25 m high with an initial velocity of 10.3 m/s, directed 32.0° above the horizontal. (a) Using energy techniques, find the speed of the snowball as it reaches the ground below the cliff. What is that speed (b) if the launch angle is changed to 32.0° below the horizontal and (c) if the mass is changed to 1.40 kg?
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Birdie
Physics
A rocket burns fuel at a rate of 264 kg/s and
exhausts the gas at a relative speed of 8 km/s.
Find the thrust of the rocket.
Answer in units of MN.
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Sara Mccann
Physics
The absolute temperature corresponding to 200°C is
a) 73 K
b) 73 K
c) 473 K
d) 427 K
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Zayne Bell
Physics
Juanita made an electromagnet by placing an iron bar inside a coil of wire and then running current through the wire. After awhile, she turned off the current. What happened to the bar?
A The bar continued to be magnetic forever.
B The bar's magnetism became weaker over a long time.
C The bar remained magnetic, but only at the poles.
D The bar immediately lost its magnetism.
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Ignacio Hayes
Physics
What unbalanced force is required to accelerate a 1,500kg-race car at 3.0m/s2
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Darian Chase
Physics
1. What causes an object to be at rest? Describe why it might not truly be at rest.
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Jovanny Mcgrath
Physics
When something hits a table, why are different sounds produced?
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Kara Suarez
Physics
Describe the relative energy of the electrons in the shells of a calcium atom
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Leon
Physics
The Number above the elements symobls is the elements atomic number.
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Zechariah Kelly
Physics
During a softball game, a shortstop catch a ground ball. The action forces is the ball pushing on the glove. What is the reaction?
A. The fielder pushing on the ball
B. The ball pushing on the ground
C. The glove pushing on the ball
D. The ground pushing on the ball
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Jenny Molina
Physics
Electric fences are not connected to the ground in the circuit.
A. True B. False
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Camden Lee
Physics
Which of the following is/are true about the size of stars? Select all that apply. One solar mass is equal to the mas of the Sun Most stars are smaller than the Sun Most starts are larger than the Sun The Sun is smaller than average There are some stars much larger than the sun, up to 100 solar masses or more
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