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4 years ago

1.

Physics

1 answer:

Strike441 [17]4 years ago

6 0

Answer:

Option(a) All of the above;

Explanation:

In relation to physics, force can be defined as any interaction between two bodies or objects that will change their motion. In simpler terms force refers to push/pull of a body with mass m that results in change of velocity or the acceleration a.

The concept of force can be better studied with the help of Newton’s three laws of motion. In it, he explained the nature of action of forces under normal condition

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The force of gravity pulls down on your school with a total force of 400,000 newtons. The force of gravity pulling down on your

gizmo_the_mogwai [7]

Answer: a Had twice as much mass

Explanation:

The data that we have is:

"The force of gravity pulls down on your school with a total force of 400,000 newtons. "

First, remember that, by the second Newton's law that:

F = a*m

F = force

a = acceleration

m = mass

In the case of the gravitational force, the gravitational acceleration is a constant: a = 9.8m/s^2

Then, if we want to have twice as much force the only thing that we can change in the equation is the mass:

Then if the initial force is written as:

F = a*m

twice as much that force is written as:

2*F = a*x

x is a variable that represents the new mass.

We know that F = a*m

2*F = 2*a*m

2*a*m = a*x

2*m = x

Then, if we want to have twice as much force, we should have twice as much mass.

7 0

3 years ago

A singly charged ion of 7Li (an isotope of lithium which lost only one electron) has a mass of 1.16 ×10^-26 kg. It is accelerate

MaRussiya [10]

Explanation:

It is given that,

Mass of lithium, $m=1.16\times 10^{-26}\ kg$

It is accelerated through a potential difference, V = 224 V

Uniform magnetic field, B = 0.724 T

Applying the conservation of energy as :

$\dfrac{1}{2}mv^2=qV$

$v=\sqrt{\dfrac{2qV}{m}}$

q is the charge on an electron

$v=\sqrt{\dfrac{2\times 1.6\times 10^{-19}\ C\times 224\ V}{1.16\times 10^{-26}\ kg}}$

v = 78608.58 m/s

$v=7.86\times 10^4\ m/s$

To find the radius of the ion's path in the magnetic field. The centripetal force is balanced by the magnetic force as :

$qvB=\dfrac{mv^2}{r}$

$r=\dfrac{mv}{qB}$

$r=\dfrac{1.16\times 10^{-26}\ kg\times 7.86\times 10^4\ m/s}{1.6\times 10^{-19}\ C\times 0.724\ T}$

r = 0.0078 meters

So, the radius of the path of the ion is 0.0078 meters. Hence, this is the required solution.

4 0

3 years ago

A spring-launched toy is propelled into the air. At first when the spring is compressed and the toy is placed on top. Before the

wlad13 [49]

In this problem, you are asked to find a vertical position of a ball when you are given its initial position on a spring. In both locations, the speed of the ball is zero.

If non-conservative forces are either known or small and if energy is converted from one form to another between the locations, then any time you relate speed and position of an object at two different points, conservation of energy is the most direct way to understand the problem.

In this case, you start out with stored energy in the compression of the spring and convert it to stored gravitational energy.

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3 years ago

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morpeh [17]

Jackson sells lemonade for $2 per cup. he paid $20 for supplies to sell 5 cups. What is the domain for this scenario

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3 years ago

A student shines a mixture of red and blue light onto a blue toy car what color will the car appear to have explain your answer

Arlecino [84]

Answer:

If we use a mixture of red and blue light, the blue toy car might reflect deep magenta color. If the toy car is made up of metal, it might reflect glittery magenta color. If the intensity of the blue color is greater, the toy car might show dark blue color

Explanation:

is this right please let me know:D

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3 years ago