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Physics

Billy

A spring balance attempts to drag an object across a table, but the object does not move because of the force of friction acting on the body in an equal and opposite direction. When the forces acting upon an object are equal and opposite the object is said to be in a state of equilibrium. What are these forces called?

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Physics

Guest

Is the sun abiotic or biotic

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Physics

Rudy Mcgee

What is the magnitude φinitial of the magnetic flux through one turn of the coil before it is rotated?

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Physics

Maleah Harris

A liquid mixture of water and alcohol has a density of 900kg/m3. find the mass of alcohol in one litre of the mixture

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Physics

Deon Lynn

What are the steps to find the mass of 30 mL of water

... ?

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Physics

Yazmin Rangel

A motorcycle stunt driver zooms off the end of a cliff at a speed of 30 meters per second. If he lands after 0.75 seconds, what is the height of the cliff?

a. What do you know?

b. What do you need to solve for?

c. What equation (s) will you use?

d. What is the solution to this problem?

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Physics

Sullivan Barker

What is true of all particles of gas enclosed within a container?

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Physics

Everett Wolf

In mammals, the weight of the heart is approximately 0.5% of the total body weight. Write a linear model that gives the heart weight in terms of the whole body weight. Use the model to fins

a. the weight of a human whose weight is 183 lbs.

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Physics

Alexander Dixon

For a projectile launched from the vertically from the surface the earth with initial velocity v0, the velocity of the projectile when at distance r from the center of the earth satisifes the equation:

v^2 = v0^2 + k^2 (1/r - 1/R)

Here, k is a positive constant.

Write the differential equation governing the distance r (t)

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Physics

Anne Downs

What is the formula for convection?

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Physics

Simeon Weiss

A 398-kg boat is sailing 14.0° north of east at a speed of 1.50 m/s. 23.0 s later, it is sailing 33.0° north of east at a speed of 4.40 m/s. During this time, three forces act on the boat: a 32.8-N force directed 14.0° north of east (due to an auxiliary engine), a 20.5-N force directed 14.0° south of west (resistance due to the water), and (due to the wind). Find the (a) the magnitude and (b) direction of the force. Express the direction as an angle with respect to due east.

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Physics

Faith Duffy

You use sunglasses to reduce the glare of the sun when you go outside. You are taking advantages of light's ability to do which of the following?

Possible Answers:

to reflect

to refract

to diffract

to polarize

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Physics

Camilla Murray

Is light made of elements and atoms

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Physics

Cardenas

Why do surface winds tend to cross the isobars?

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Physics

Abbie Hicks

The typical unit for a period used with Kepler's third law is

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