The weight of a body in earth is 29N. Find the mass?

Answers

Answer 1

Answer: Hi!

The weight force is given by: F = mg (mass x gravity)

Then, we have:
29 = m * 9.8
29/9.8 = m
m = 2.95 kg

;)

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A 20 kg box moving at an initial speed of 10 m/s slides 25 m to the right on a horizontal floor before it comes to a complete stop. What is the coefficient of friction between the box and the floor?

Answers

The coefficient of friction between the 20 kg box and the floor is 0.2

We'll begin by calculating the acceleration of the box. This can be obtained as follow:

Initial velocity (u) = 10 m/s

Final velocity (v) = 0 m/s

Distance (s) = 25 m

Acceleration (a) =?

v² = u² + 2as

0² = 10² + (2 × a × 25)

0 = 100 + 50a

Collect like terms

0 – 100 = 50a

–100 = 50a

Divide both side by 50

a = –2 m/s²

Finally, we shall determine the coefficient of friction. This can be obtained as follow:

Mass (m) = 20 Kg

Acceleration (a) = –2 m/s²

Acceleration due to gravity (g) = 10 m/s²

Frictional Force (F) = –ma = – (20 × –2) = 40 N

Normal reaction (N) = mg = 20 × 10 = 200 N

Coefficient of friction (μ) =?

$\mu = (F)/(N) \n\n\mu = (40)/(200)\n\n$

μ = 0.2

Therefore, the coefficient of friction between the box and the floor is 0.2

Learn more: brainly.com/question/11902512

The coefficient of friction between the box and the floor is 0.204.

Given data:

The mass of box is, m = 20 kg.

The initial speed of box is, u = 10 m/s.

The sliding distance is, s = 25 m.

The linear force acting on the fox is providing it necessary friction. Then,

$F = -F_(f)\nma = -\mu mg\na= -\mu * g$

Here, a is the linear acceleration and $\mu$ is the coefficient of friction between the box and the floor.

Applying the third kinematic equation of motion as,

$v^(2)=u^(2)+2as\n0=10^(2)+2(a)* 25\na = (-100)/(50)\na =- 2\;\rm m/s^(2)$

Then,

$a=- \mu * g\n-2= -\mu * 9.8\n\mu = 0.204$

Thus, we can conclude that the coefficient of friction between the box and the floor is 0.204.

Learn more about frictional force here:

brainly.com/question/23575742?referrer=searchResults

What is one way that fission and fusion are similar?

Answers

Well, they both start chain reactions and they are also both used in certain nuclear bombs. Also they are both natural processes that occur in the sun, where hydrogen fuses with helium atoms and then they split by the process of fission.

The main difference between speed and velocity involves A. gravity.
B. distance.
C. weight.
D. direction.

Answers

Velocity is speed AND its direction.

The Correct answer to this question for Penn Foster Students is: Direction

How many parsecs can a particular person parse if a person could parse a particular parsec

Answers

A parsec is a unit of distance. It's not something that a parson can parse.

Final answer:

A parsec is a unit of distance used in astrophysics to measure the distance between celestial objects. It is equal to 3.26 light-years or approximately 31 trillion kilometers.

Explanation:

A parsec is a unit of distance used in astrophysics to measure the distance between celestial objects. It is equal to 3.26 light-years or approximately 31 trillion kilometers. The concept of a parsec is based on stellar parallax, which is a method used to calculate distances to nearby stars.