PHYSICS HIGH SCHOOL

What force is required to accelerate a body with a mass of 15 kilograms at a rate of 8 m/s²?a. 23 N
b. 1.875 kg
c. 23 kg
d. 120 N

Answers

Answer 1

Answer: 15 = d

F =MxA =15x8 =120

Answer 2

Answer:

Answer:

120 N

Explanation:

p =mv p = 15 kg*8m/s2 = 120N

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What is absolute zero

Answers

An absolute zero is when all forms of being cease to move due to low to none existing thermal energy between all living things. It follows the statement of Kelvin’s temperature scale where the temperature is -275.15K or -546.3°C.

The angle between magnetic north and the north to which a compass needle points is known as magnetic declination.Please select the best answer from the choices provided

T
F

Answers

From among the choices provided, the better choice is the upper-case letter 'T '. That symbol can conveniently be used to represent the words "true" or "truth", which is exactly the reason that it is the better choice for a response, since the complicated statement at the beginning of the question is completely true in its every detail, nuance, jot and tittle.

Answer:

it is true my child

Explanation:

A light plane is headed due south with a speed relative to still air of 185 km/h. After 1 h, the pilot notices that they have covered only 135 km and their direction is not south but 75˚ south of east. What is the wind velocity?

Answers

Use the cosine rule to solve for the distance the wind pushed them to the east and because this all happened in an hour, you can say they travelled this distance per hour.

+-130 km due east which means the wind speed was +-130km/h.

So for example i used a^2=b^2+c^2-2bc(cos75) b will be the distance they travelled and c= 135cos75=35km now all you do is substitute in and you will get your distance that the wind pushed them to the east and because it was an hour of travel the distance as said before will be per hour.

Final answer:

The wind velocity can be calculated by vector subtraction of the plane's velocity relative to the ground (the observed travel path) and the plane's velocity relative to still air. This involves converting the velocities to their component forms along the east-west and north-south axes, performing the subtraction, and then converting back to a magnitude and direction.

Explanation:

This problem can be solved through the use of vector addition and subtraction. Let's denote the velocity of the plane as Vp, the velocity of the wind as Vw, and the resultant velocity (or the actual observed travel path) as Vr. These velocities are vectors, which mean they have both magnitude and direction.

Given that the plane had an airspeed of 185 km/h due south, which can be represented as Vp=185 km/h south. However, the actual path covered was Vr=135 km/h, 75° south of east. We can find Vw through the equation Vr = Vp + Vw, rearranged as Vw = Vr - Vp.

Following this calculation, we then need to convert these vector magnitudes and directions into components along the north-south and east-west axes. We then subtract corresponding components to find the wind velocity in terms of its north-south and east-west components, before finally converting these back into a magnitude and direction using Pythagoras' theorem and trigonometric functions.

Learn more about Physics of Wind Velocity here:

brainly.com/question/24253179

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What is the most important consideration for environmental policy makers?

Answers

The most important consideration for environmental policy makers would be : environmental health
The basic purpose in creating environmental policy is maintaining the health of the population. the policies that created by the policy makers should be created to prevent any type of damage to population's well being

hope this helps

Answer:

Explanati

Humans impact the environment, which can, in turn, have an effect on human health. Pollution is caused by human activity, and it also affects human health. Air pollution can cause respiratory problems and water pollution can lead to digestive problems. As human health is affected by these issues, concern increases and policies are enacted that address the causes of the issues. These policies do benefit the environment, but are, in part, brought about by concerns over human health.

Which is heavier, the earth or the moon

Answers

When you say "heavy", you're talking about the gravitational force
between that object and another object, so it depends on what the
"other object" is.

If the "other object" is, let's say, the sun, then the gravitational attraction
between the Earth and sun is about 80 times as much as the gravitational
attraction between the Moon and sun, because the Earth has about 80 times
the mass of the Moon.

But if, somehow, the weight you have in mind is the gravitational attraction
between the Earth and the Moon, then those forces are equal. The force
of gravity between two objects depends on the product of both masses,
and it's equal in both directions.

If that isn't clear to you, let me give you this additional fact that's guaranteed
to knock you even further off-balance:

Your weight on the Earth is determined by the product of

   (your mass) times (the Earth's mass).

The Earth's weight on you is determined by the product of

   (your mass) times (the Earth's mass).

Your weight on Earth is the same as the Earth's weight on you.

Would you like to prove it ?

-- Turn the bathroom scale upside-down, so that the step-pad
    is on the floor.

-- Then step on it, so that you're standing on the bottom, which
    is facing up.

-- If you placed a little mirror on the floor, so that you can read
   the numbers, which are facing down toward the floor, you'll
   read your own weight, even though with the scale upside-down,
   you're weighing the Earth on you.

A boy kicks a ball with a mass of 5 kg so that it accelerates at 4 m/s2 in the forward direction. A 40 N
B 0 N
C 20 N backward
D 20 N forward