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Rubi
Why is it safe to watch an eclipse of the Moon but not an eclipse of the Sun
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Ryan Foley
A student holds two pieces of paper at the top, 10 cm apart. The flat sides of the papers face each other.

What happens when the student uses a straw to blow a stream of air between the papers?
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Courtney
Which of the following best describes the inheritence of sex-linke trait?

A. reccessive alle carried by females that affecfts only males.

B. A allelle carried by females that affects only males.

C. An allele carried on the Y chromosome that can affect both males or females.

D An alle carried on the X chromosome that can affect males or females
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Tatiana Ritter
A sound wave can be used to shatter a wine glass. This can be explained by which of these? A) sound is a compression wave. B) the sound will interfere with the molecules in the glass. C) the sound resonantes at the natural frequency of the glass. D) if sound is loud enough it will have enough energy to break the glass
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Quincy
How can you find average speed
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Mills
Four identical lab carts each have a mass of 200 kg. Different masses are added to the carts and the velocities are measured. All carts move to the right.
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Guest
You push forward on a car with a force of 150 N, but the car does not move. What is the net force on the car?
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Hoover
A box weighs 100N and its base area of 2 m2. What pressure does it exert on the ground?
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Jelly
To a good approximate, the only external force that does work on a cyclist moving on level ground is the force of air resistance. Suppose a cyclist is traveling at 15 km/h on level ground. Assume he is using 480 W of metabolic power.

a. Estimate the amount of power he uses for forward motion.

b. How much force must he exert to overcome the force of air resistance?
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Aarav Vazquez
What always happens when two objects of different temperatures come in contact?
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Olson
A 0.25 kg arrow with a velocity of 12 m/s to the west strikes and pierces the center of a 6.8 kg target. What is the final velocity of the combined mass
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Sugar
Which statement describes a newton?

It exists only idr objects on Earth.

It measures the mass of an object.

It reflects the amount of force an object exerts.

It states that every object attracts another object.

Save and Exit
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Kendrick Knox
The unit of force is ... Friction is a force which is created when ... Friction is a force which ... Moving objects and may prevent objects from starting to move.
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Lincoln Guerrero
3. Ms. Johnson can bench press 150 kg from 0.7 m from the ground to 1.5 m above the ground. a. How much weight (not mass) did Ms. Johnson lift? Put down Givens, Solving For, Equation, Substitution, Answer with Units

b. How much power did she use if she lifts the weights in 10s? Put down Givens, Solving For, Equation, Substitution, Answer with Units
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Brice
What is the difference between a 3 v and 12 v battery
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