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erica [24]
3 years ago
5

In which direction does a bag at rest move when a force of 20 newtons is applied from the right? A. in the direction of the appl

ied force B. in the direction opposite of the direction of the applied force C. perpendicular to the direction of the applied force D. in a circular motion
Physics
2 answers:
DedPeter [7]3 years ago
8 0

Answer:

A. in the direction of the applied force

Explanation:

As per newton's first law of motion we know that object will not change in its state of motion till some external force is applied on it

So here we can say that when force is applied on an stationary object then the stationary object will move in the direction of applied force so change in the state of motion from rest state to moving state will occur and the direction of motion must be in applied force direction

So correct answer will be

A. in the direction of the applied force

-Dominant- [34]3 years ago
5 0

The correct answer is A. In the direction of applied force. This is because acceleration occurs n the direction of applied force according to Newtons second law of motion which states that the acceleration of a body is directly proportional to the applied force and takes place in the direction of force.

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Write the formula of mechanical advantage​
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Answer:

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MA = load / effort

VR = effort distance / load distance

hope it is helpful to you

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3 years ago
Collision practice
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Answer:

v_f=4\:\mathrm{m/s\: in\:Biff's\:direction}

Explanation:

Using the Law of Conservation of Momentum, we can set up the following equation:

m_2v_2-m_1v_1=m_fv_f, where m_1v_1 is Bruce's momentum and m_2v_2.

Plugging in given values, we get:

90\cdot7-45\cdot2=(90+45)v_f, \\v_f=\frac{540}{135}=\fbox{$4\:\mathrm{m/s}$}.

6 0
4 years ago
When a vertical beam of light passes through a transparent medium, the rate at which its intensity I decreases is proportional t
antoniya [11.8K]

Answer:

Intensity of beam 18 feet below the surface is about 0.02%

Explanation:

Using Lambert's law

Let dI / dt = kI, where k is a proportionality constant, I is intensity of incident light and t is thickness of the medium

then dI / I = kdt

taking log,

ln(I) = kt + ln C

I = Ce^kt

t=0=>I=I(0)=>C=I(0)

I = I(0)e^kt

t=3 & I=0.25I(0)=>0.25=e^3k

k = ln(0.25)/3

k = -1.386/3

k = -0.4621

I = I(0)e^(-0.4621t)

I(18) = I(0)e^(-0.4621*18)

I(18) = 0.00024413I(0)

Intensity of beam 18 feet below the surface is about 0.2%

3 0
3 years ago
14. The United States Tobacco Settlement between the major tobacco companies and 46 states caused the price of cigarettes to jum
AysviL [449]

Answer:

B. The elasticity of demand is -0.126

Explanation:

% Change in Quality demand = -2.65% (negative because of drop)

% Change in price = 21%

Elasticity of demand is given by

\text{Elasticity of demand}=\dfrac{\text{\% Change in Quality demand}}{\text{\% Change in price}}\\\Rightarrow \text{Elasticity of demand}=\dfrac{-2.65}{21}\\\Rightarrow \text{Elasticity of demand}=-0.12619

The Elasticity of demand is -0.12619

8 0
4 years ago
Do magnets have to touch each other in order to experience a magnetic<br> force? Explain
tiny-mole [99]
Magnets don’t need to touch each other in order to be magnetic because all objects have an attraction however, the closer the magnets get, the more magnetic it is.
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3 years ago
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