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Physics

Marlie Freeman

The density of ice is 0.93 g/cm3. what is the volume, in cm3, of a block of ice whose mass is 5.00 kg? remember to select an answer with the correct number of significant figures.

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Physics

Alexander Salas

Two planets p1 and p2 orbit around a star s in circular orbits with speeds v1 = 44.0 km/s, and v2 = 56.2 km/s respectively. (a) if the period of the first planet p1 is 700 years what is the mass, in kg, of the star it orbits around? kg

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Physics

Cade Dean

The theory describing the movement of the plates is called plate motion theory.

True or false?

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Physics

Reece Guzman

Would electromagnetic waves exist if changing magnetic fields could produce electric fields but changing electric fields could not, in turn, produce magnetic fields? Explain.

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Physics

Keshawn Rowe

A person walks 4.0 kilometers north, then 4.0 kilometers west. His displacement is closest to

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Physics

Rhett Davies

A radar station detects an airplane approaching directly from the east. at first observation, the range to the plane is d1 = 354 m at 40° above the horizon. the airplane is tracked for another 123° in the vertical eastwest plane, the range at final contact being d2 = 800 m. see fig. 2-31. find the displacement of the airplane during the period of observation.

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Physics

Guest

A bookshelf is 2m long, with supports at its end (p and q). A book weighing 10N is placed in the middle of the shelf. what are the upward forces?

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Physics

Jett Roth

Obligation of reasearchers to review true or fasle

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Physics

Mccullough

When describing how power and work are similar you would want to mention that

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Physics

Guest

Define newton's first law and provide an example

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Physics

Madison Cardenas

Biomes on Earth have exhibited changes throughout history that have been caused by a variety of factors. Over the past 50 years, the amount of tropical rainforest acreage found throughout the world has decreased from 14.8 billion acres to 8.6 billion acres due to deforestation. What factor is likely most responsible for the changes observed in the world's rainforests?

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Physics

Sherlyn Salazar

Three pithballs are suspended from thin threads. Various objects are then rubbed against other objects (nylon against silk, glass against polyester, etc.) and each of the pithballs is touched by one or more of these objects (transferring some charge with each touch). It is found that pithballs 1 and 2 attract each other and that pithballs 2 and 3 repel each other. From this we can conclude

a - At least one of the pithballs must have negative charge. b - Pithballs 1 and 3 carry charges of opposite signc - We need to do more experiments to determine the sign of the charges. d - One of the pithballs carries no charge. e - All three pithballs carry charges of equal sign.

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Physics

Guest

Which of The following are classiFcatons describing how rock and oTher maTerial movedownslope? a. Fall, b. slide, c. slump, d. creep, e. fow

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Physics

Matteo Golden

What is the acceleration of a 32-kg object if a 6.75-N force is applied to it?

a. 0.21 m/s2

b. 4.74 m/s2

c. 21.09 m/s2

d. 216.00 m/s2

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Physics

Gunnar Lowe

Gravitational force is a (n) ? A) attractive force B) repulsive force C) both an attractive and repulsive force D) neither an attractive or repulsive force

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