How to solve for vi in vf=vi+at?

Answers

Answer 1

Answer: Subtract 'at' from each side of that equation.

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What is a lunar eclipse?

Answers

Moon eclipse is when the moon interposes between the sun and behind the Earth. The moon passes behind the Earth into its umbra and not viceversa! This is possible when the three of them are ALIGNED (in syzygy). In Romania, there was such eclipse that could be seen at an October night last year.

A lunar eclipse is basically when the earth passes between the moon and sun, causing the moon to appear darkened. Also, unlike the solar eclipse, the lunar eclipse occurs during the day.

How could a lightbulb near an electromagnet, but not touching it, be lit? Is ac or dc required? Defend your answer.

Answers

Answer:

If the light bulb is connected to a wire loop that intercepts changing magnetic field lines from an electromagnet, voltage will be induced which can illuminate the bulb. Change is key, so to stay lit the electromagnet should be powered with AC.

Explanation:

What is the momentum of a 75.0-kilogram defensive back chasing the fullback at a velocity of 5.00 m/sec.

Answers

Answer : The momentum is, 357 kg.m/s

Explanation :

Momentum : It is defined as the motion of a moving body. Or it is defined as the product of mass of velocity of an object.

Formula of momentum is:

$p=mv$

where,

p = momentum

m = mass = 75.0 kg

v = velocity = 5.00 m/s

Now put all the given values in the above formula, we get:

$p=75.00kg* (5.00m/s)=357kg.m/s$

Therefore. the momentum is, 357 kg.m/s

75 kg × 5 m/sec = 375 kgm/s

Hope this helps :)

If a platinum wire has a resistance of 15 Ω and is connected across the terminals of a 3.0 V flashlight battery, how much current is in the wire?

Answers

The voltage is presented by the equation V = IR where V is voltage in V, I is current in amperes ad R is resistance in ohms. If a platinum wire has a resistance of 15 Ω and is connected across the terminals of a 3.0 V flashlight battery, the current can be solved through V= IR, 3.0 V = I (15 Ω), and the current is 0.2 A.

Scientists believe Earth is about how many billion years old

Answers

The earth is 4.54 billion years old.

An electron released by a radioactive nucleus that causes a neutron to change into a proton is called

Answers

the answer to this beta particle that causes a neutron to change into a proton so it is simple to see that me and al2006 see that the answer is beta particle.

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