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m_a_m_a [10]
3 years ago
12

How does a lever apply forces with advantage?

Physics
1 answer:
KATRIN_1 [288]3 years ago
3 0

Answer:

quick maths

Explanation:

quick maths

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A student pulls out his or her chair in order to sit down. The student pulls the chair 0.75 m with a force of 20 N. How much wor
IRINA_888 [86]
Work = Force x displacement
Force= 20N
Displacement= 0.75m

W= 20(0.75)
W= 15 Nm
3 0
3 years ago
The cloud of dust and gas where our solar system originated is called:.
Olin [163]

Answer:

Solar Nebula

Explanation:

~About 4.6 billion years ago, the sun and planets formed together from a cloud of dust and gas in which was called the solar nebula.~

~The cloud surrounded the sun in a crust and then it broke apart, according to theory.~

Hope this Helps!

8 0
2 years ago
The
Finger [1]

Answer:

1.) 10.61 A

2.) 0.27 A

Explanation:

Given that a sinusoidal A.C has a maximum value of 15A.

1) What are its r.m.s values?

ii) If the time is recorded from the instant the current is zero and is becoming

positive, what is the instantaneous value of the current after 1/300s, given the

frequency is 50 Hz.​

Solution.

1.)

The r.m.s current = peak current/root 2

The r.m.s current = 0.7071 × 15

The r.m.s current = 10.61 A

2.)

Given that

Time = 1/300 s

Frequency = 50 Hz

Instantaneous current can be calculated by using the formula

I = I sin wt

Where w = 2πf

Instantaneous current = 15( sin 2πft)

I = 15 × sin ( 2 × 3.143 × 50 × 1/300 )

I = 15 × sin ( 1.047 )

I = 15 × 0.01827

I = 0.27 A

Therefore, the instantaneous current is 0.27A

3 0
3 years ago
2. What is the difference between analytical response and concentration?
Anton [14]
An example helps clarify the difference between an analysis, a deter- mination and ... departments analyze samples of water to determine the concentration of ... moles of Cu2+, and cylinder 2 contains 20 mL, or 2.0 × 10.
5 0
3 years ago
Is vectors and motion in plane same?
suter [353]

Answer:

<em>Plane Motion</em>

<em>Plane Motion One of the most common examples of motion in a plane is Projectile motion.</em>

8 0
2 years ago
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