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4 years ago

Could someone explain how to calculate the frictional force if a side force is placed upon an object?

Physics

1 answer:

tangare [24]4 years ago

5 0

Answer:

Friction force is equal to the coefficient of friction times the normal force.

Explanation:

It does not really matter if the force is side or not. You need to draw a free body diagram, add weight, normal force, friction force and active force. Then see the horizontal and vertical components to calculate what is the normal force.

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A proton and an alpha particle (q = +2e, m = 4 u) are fired directly toward each other from far away, each with an initial speed

stich3 [128]

Answer:

Distance of closest approach, $r=1.91\times 10^{-14}\ m$

Explanation:

It is given that,

Charge on proton, $q_p=e$

Charge on alpha particle, $q_a=2e$

Mass of proton, $m_p=1.67\times 10^{-27}\ kg$

Mass of alpha particle, $m_a=4m_p=6.68\times 10^{-27}\ kg$

The distance of closest approach for two charged particle is given by :

$r=\dfrac{k2e^2(m_p+m_a)}{2m_am_pv_p^2}$

$r=\dfrac{9\times 10^9\times 2(1.6\times 10^{-19})^2(1.67\times 10^{-27}+6.68\times 10^{-27})}{2\times 6.68\times 10^{-27}\times 1.67\times 10^{-27}(0.01\times 3\times 10^8)^2}$

$r=1.91\times 10^{-14}\ m$

So, their distance of closest approach, as measured between their centers $1.91\times 10^{-14}\ m$ . Hence, this is the required solution.

4 0

3 years ago

Which best describes the process by which ultrasounds images are made?

otez555 [7]

Answer:

Sonography-A process in which machine generate a high frequency sound waves that bounch back or reflected from the surface creating echos that are then processed into images .

Ultrasound scans are used to detect problems in the liver, heart, kidney, or abdomen.

Explanation:

6 0

4 years ago

Read 2 more answers

You know that Alfred Wegener’s ideas were not immediately accepted. What evidence was found that convinced his contemporaries (p

Debora [2.8K]

Answer:

The apparent fit of the eastern coastline of South America and western coastline of Africa

Similarities of plants and animal fossils in South America and some parts of African continent which were separated by a vast ocean

Similarities in the sequence of rock layers of opposite sides of the Atlantic Ocean

7 0

3 years ago

What would happen to the marbles speed if we had longer tables

Zanzabum

Answer:

The marble will start to decrease in speed

Explanation:

The longer the table is the more the marbles speed would decrease because marbles can only be fast for a certain amount of time

7 0

4 years ago

Read 2 more answers

A train travels a distance of 300 miles in 6 hours. What is the train's average speed? Question 4 options: 50 miles per hour 50

Ainat [17]

The average speed of a train during its journey is 50 miles per hour.

What is Average Speed?

The ratio of total distance covered by an object, to the total time taken to cover the entire distance, is known as average speed.

Given data -

The distance covered by the train is, d = 300 miles.

The time taken by the train is, t = 6 hrs.

The expression for the average speed of train is given as,

v = d/t

Solving as,

v = 300/6

v = 50 mi/hr

Thus, we can conclude that the average speed of a train during its journey is 50 miles per hour.

Learn more about the average speed here:

brainly.com/question/12322912

4 0

2 years ago