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Vladimir79 [104]
3 years ago
5

an object has a displacement of + 12 m in 6 seconds if the average velocity is found using the equation change in position / ela

psed time what is the average velocity of the object be sure to include the correct signs and units in your answer​
Physics
1 answer:
rosijanka [135]3 years ago
6 0

Answer:

+2m/s

Explanation:

average   velocity = displacement traveled / total time taken

                           = +12m/ 6s

                           = +2 m/s

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A singly charged 7Li ion has a mass of 1.16 10-26 kg. It is accelerated through a potential difference of 523 V and subsequently
mel-nik [20]

Answer:

R=0.023m

Explanation:

From the question we are told that:

Mass m=1.16*10^{-26}

Potential difference V=523V

Magnitude m=0.370 T

Generally the equation for Velocity is mathematically given by

\frac{1}{2}mv^2=ev

v=\frac{2ev}{m}

v=\frac{2*1.6*10^{-19}*542}{1.16*10^{-26}}

v=12.22*10^4m/s

Generally the equation for Force is mathematically given by

F=qvBsin \theta

Where

qVB=m\frac{v^2}{R}

F=m\frac{v^2}{R}sin\theta

Therefore

R=\frac{mv}{qB sin \theta}

R=\frac{1.6*10^{-26}*12.2*10^{4}}{1.60*10^{-19}*0.394 sin 90}

R=0.023m

8 0
3 years ago
Which items in this picture provide insulation?
Verdich [7]

Answer:wdym insulation if u mean like covering than the ppls heads

Explanation:

5 0
4 years ago
What is matter? explain and give example
kotykmax [81]
Matter is generally any physical substance, and it's all around us... a form of matter would be liquid, and water is a liquid.
4 0
3 years ago
Alternating current is normally produced by a
aliina [53]

Answer:

B) generator

Explanation:

Alternating current is a type of current that changes direction periodically which is produced by a generator. This generator consists of a magnet and a loop of wire which rotates in the magnetic field of the magnet.

Therefore, from the given question, alternating current is normally produced by a generator.

Option B is the correct answer

3 0
4 years ago
A car of mass 1200 kg, moving with a speed of 72 mph on a highway,
Keith_Richards [23]

momentum(p) = mass(m) x velocity(v)

KE = kinetic energy = 1/2 mv²

a.

the ratio of the momentum of the SUV to that of the car

\tt \dfrac{mv}{1.5m\dfrac{2}{3}v }=1:1

b.  the ratio of the KE of the SUV to that of the car

\tt \dfrac{1/2\times mv^2}{1/2\times 1.5m\times (\dfrac{2}{3}v )^2}=\dfrac{mv^2}{1.5m\dfrac{4}{6}v^2 }=1:1

8 0
2 years ago
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