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Roderick Graham
A small sandbag is dropped from rest from a hovering hot-air balloon. (assume the positive direction is upward.) (a) after 1.5 s, what is the velocity of the sandbag?
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Moshe
The velocity of a car changes from 5 m/s to 10 m/s. what is the acceleration of the car?
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Arely
What is the density of 25 grams
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English
Do physical changes include changes in the states of matter?
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Maddison Howe
Determine the change in velocity of a car that starts at rest and has a final velocity of 20 miles per second North
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Parker Aguilar
Consider your moment of inertia about a vertical axis through the center of your body, both when you are standing straight up with your arms flat against your sides, and when you are standing straight up holding your arms straight out to your sides. Estimate the ratio of the moment of inertia with your arms straight out to the moment of inertia with your arms flat against your sides. (Assume that the mass of an average adult male is about 80 kg, and that we can model his body when he is standing straight up with his arms at his sides as a cylinder. From experience in men's clothing stores, a man's average waist circumference seems to be about 34 inches, and the average chest circumference about 42 inches, from which an average circumference can be calculated. We'll also assume that about 20% of your body's mass is in your two arms, and that each has a length L = 1 m, so that each arm has a mass of about m = 8 kg.)
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Glenn Sparks
It is advised not to hold the thermometer by the bulb while reading it
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Rambler
A barge floating in fresh water (rho = 1000 kg/m^3) is shaped like a hollow rectangular prism with base area A = 550 m^2 and height H = 2.0 m. When empty the bottom of the barge is located H0 = 0.55 m below the surface of the water. When fully loaded with coal the bottom of the barge is located H1 = 1.35 m below the surface.

Randomized Variables

A = 750 m²

H₀ = 0.55 m

Hᵢ = - 1.1 m

(A) Write an equation for the buoyant force on the empty barge in terms of the known data.

(B) Determine the mass of the barge in kilograms.
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Jaelyn Livingston
Select the correct locations on the periodic table. Which two elements have similar characteristics?
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Rayan
A volleyball hits the floor. What is the "reaction" force from Newton's third law?
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Cecelia Ross
When enough experimental data support a hypothesis, the hypothesis becomes a (an) Question 4 options:

a. fact.

b. theory.

c. inference.

d. conclusion.
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Selena
The original Ferris wheel had a radius of 38 m and completed a full revolution (2π radians) every two minutes when operating at its maximum speed. If the wheel were uniformly slowed from its maximum speed to a stop in 35 seconds, what would be the magnitude of the tangential acceleration at the outer rim of the wheel during its deceleration?
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Rubi
Water cools from2oC to - 2oC. During this time, what happens to the motion of the molecules? A) The motion of the molecules stops. B) The motion of the molecules increases. C) The motion of the molecules decreases. D) The motion of the molecules remains the same.
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Krish
What is "In an isolated system two cars, each with a mass of 2,000 kg, collide. Car 1 is initially at rest, while car 2 was moving at 20 m/s. what is their combined momentum after the collision?"
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Guest
A. If an electron in a hydrogen atom has an energy of - 6.06 * 10^-20 J, which Bohr orbit is it in?

b. If an electron in a hydrogen atom has an energy of - 2.69 * 10^-20 J, which Bohr orbit is it in?
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