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3 years ago

State both the sign and the magnitude of the charge on a proton, electron, and a neutron in terms of e, the elementary charge.

1 answer:

6 0

-- The charge on the proton is +1 .

-- The charge on the neutron is 0 . No charge.

-- The charge on the electron is -1 ... same magnitude and
opposite sign compared to the charge on the proton ... even
though it takes more than 1,800 electron masses to make the
mass of one proton or one neutron. Weird little things !

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A ball is thrown into the air with 100 J of kinetic energy, which is transformed to gravitational potential energy

natka813 [3]

Answer:

Option A

Air resistance

Explanation:

Despite the law of conservation of energy stating that energy can neither be created nor destroyed but can only be transformed from one state to the other, the process of transformation is not 100% efficient since some energy losses occur due to friction and air resistance. Therefore, when the final energy is slightly less than the original dor this case, it's due to energy loss due to air resistance.

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3 years ago

Which of the following molecules found within the cell membrane is thought to be involved in cell self-recognition? a. carbohydr

Nadusha1986 [10]

Answer:

Lipids

Explanation:

Membrane mostly considered largely of lipid bilayer. It is the double called phospholipids. These glycolipids contains the chain of fatty acids. These fatty acids determines that whether the sheet of membrane is formed around the vesicles or not.

Lipids that provide a liquid to the membrane cells. The consistency of liquid appears as the light oil. It consists of fatty acid chain that includes many fatty acid molecules for example oxygen that permeate from the membrane. These fatty acids repels large molecules fatty acids such as sugar, electrical charged ions etc.

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2 years ago

You compress a spring by a distance of 0.2 m. The spring has a spring constant of 37 N/m. When you release the spring, it snaps

Serggg [28]

At that point it is no longer trying to uncompress nor is it trying to stretch. This is the same thing as a pendulum at the bottom of its swing, no longer falling but not yet rising against gravity. Thus the kinetic energy there is the same as the potential energy when it is compressed. The energy of compression is
$\frac{1}{2}k x^{2}$
This gives E=0.5(37)(0.2)²=0.74J
This is the same as the kinetic energy when it is at natural length

7 0

3 years ago

Read 2 more answers

A rope is wrapped three and a half times around a cylinder. Determine the range of force T exerted on the free end of the rope f

Taya2010 [7]

The range of force exerted at the end of the rope is 285.7 N to 1,000 N.

<h3>Net horizontal force of the cylinder</h3>

The net horizontal force of the cylinder when it is at equilibrium position is determined by applying Newton's second law of motion.

∑F = 0

F - μFn = 0

F - 0.2(5,000) = 0

F - 1,000 = 0

F = 1,000 N

The strength of the applied force increases as the number of turns of the rope increases.

minimum force = total force/number of turns of rope

minimum force = 1,000/3.5

minimum force = 285.7 N

Thus, the range of force exerted at the end of the rope is 285.7 N to 1,000 N.

Learn more about Newton's second law of motion here: brainly.com/question/3999427

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2 years ago

A beam of red light and a beam of blue light have exactly the same energy. Which beam contains the greater number of photons?

vekshin1

The higher the frequency, the more energy the photon has. Of course, a beam of light has many photons. This means that really intense red light (lots of photons, with slightly lower energy)

4 0

3 years ago