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3 years ago

A DNA macromolecule is made up of two strands of DNA, which are connected to form a DNA double helix. The bonds between

Physics

1 answer:

Arturiano [62]3 years ago

6 0

Answer:

where is the multiple choice?

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which symbol in the first law of thermpdynamics represents energy that moves from a hot object to a cooler object?

Marysya12 [62]

The triangle <span>in the first law of thermodynamics, represents energy that moves from a hot object to a cooler object.</span>

4 0

3 years ago

A balloon is charged until it has a voltage of v=9800V. A student reaches out and is shocked by a spark. The electric force does

alina1380 [7]

a)]An expression for the magnitude of charge transferred Q is Q = W/V.

b) The magnitude of the charge, in coulombs is 1.02 x 10⁻⁹ Coulomb.

c) Number of electrons in this are 63.75 x 10⁸ electrons.

<h3>What are electrons?</h3>

The electrons are the spinning objects around the nucleus of the atom of the element in an orbit.

A balloon is charged until it has a voltage of v=9800V. A student reaches out and is shocked by a spark. The electric force does W= 1x10⁻⁶ J of work transferring the charge.

a) Work done = Charge x potential

W = Q x V

Q = W/V

b)Substitute the values into the expression, we have

|Q| = 1x10⁻⁶/9800

|Q| = 1.02 x 10⁻⁹ Coulomb

c) No of electrons = total charge /charge on electron

n = 1.02 x 10⁻⁹/1.6 x 10⁻¹⁹

n = 63.75 x 10⁸ electrons

Learn more about electrons.

brainly.com/question/1255220

#SPJ1

6 0

2 years ago

Which statement describes the law of conservation of energy

DanielleElmas [232]

Answer:

law of action and riactiond

4 0

2 years ago

Light travels faster in a material with a lower index of refraction.

lidiya [134]

Answer:true

Explanation:

The lower the refractive index,the faster the velocity of light

4 0

3 years ago

Read 2 more answers

A tennis ball is hit into the air with a racket. When is the ball’s kinetic energy the greatest? Ignore air resistance.

Lady bird [3.3K]

Answer B is the correct answer

We know that kinetic energy $E = \frac{1}{2} mv^2$ , where m is the mass of object and v is the velocity of object.

In this case only velocity is the variable, mass remains constant.

So point having higher velocity has higher kinetic energy.

When it leaves the racket, the ball will be having a certain height, but just before it reaches the ground it will not having any height. So maximum velocity of ball is at that time when it reaches just above the ground.

So option B is the correct answer.

4 0

3 years ago