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user100 [1]
3 years ago
15

An object has a weight of 950 Newtons, what is its mass? Round to the nearest tenth (one place after the decimal).

Physics
1 answer:
horsena [70]3 years ago
5 0

The mass of the object is 96.94 kg

<u>Explanation:</u>

Given:

Weight, W = 950N

Mass, m = ?

We know:

Weight = mass X acceleration due to gravity

And

g = 9.8 m/s²

On substituting the value we get:

950 = m X 9.8

m = \frac{950}{9.8}

m = 96.94 kg

Therefore, the mass of the object is 96.94 kg

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A force of 100N is applied to move an object a horizontal distance of 20m to the right. The work done by this force on the objec
horsena [70]
WORKDONE = FORCE * DISPLACEMENT
W=F*S
HERE, THE FORCE = 100N AND DISTANCE = 20M
WORKDONE = 100*20
WORKDONE=2000
ITS S.I UNIT IS JOULE OR J
SO, 2000J
5 0
3 years ago
If a flea can jump straight up to a height of 0.410 m , what is its initial speed as it leaves the ground?
aivan3 [116]

Initial velocity = \(v_0\)

acceleration in the downward direction = -9.8 \(\frac {m}{s^2}\)

Final velocity at the highest point = 0

Maximum height reached = 0.410 m

Now, Using third equation of motion:

\(v^2 = {v_0}^{2} + 2aH

\(0^2 = {v_0}^{2} - 2 \times 9.8 \times 0.410

\({v_0}^{2} = 2 \times 9.8 \times 0.410\)

\(v_0 = 2.834 \frac {m}{s}\)

Speed with which the flea jumps = \(2.834 \frac {m}{s}\)

4 0
3 years ago
The plant below is purebred for height tall. Write the alleles of this plant. In any cross for height, what kind of Offspring wi
lisov135 [29]

Answer:

This should be tagged for biology not physics.

Explanation:

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5 0
3 years ago
On a frozen pond, a 8.54-kg sled is given a kick that imparts to it an initial speed of ð£0=1.87 m/s. The coefficient of kinetic
zhannawk [14.2K]

Answer:2.05 m

Explanation:

Given

Mass of sled m=8.54 kg

initial speed u=0.187 m/s

coefficient of kinetic Friction \mu _k=0.087

According to work-energy theorem work done by all the forces is change in Kinetic energy

W_{friction}=\frac{1}{2}mv_i^2-\frac{1}{2}mv_f^2

\mu _kmg\times d=\frac{1}{2}\times 8.54\times 1.87^2 ,where d= distance moved

0.087\times 8.54\times 9.8\times d=14.93

d=\frac{14.93}{7.281}

d=2.05 m

4 0
3 years ago
You send a beam of light from a material with index of refraction 1.17 into an unknown material. In order to help identify this
Papessa [141]

Answer:

The index refraction of the unknown material is 1.08

Explanation:

Light has characteristics of a wave. When light travels or propagates through two media with different index of refraction, the light will bend or will change its speed. 

Using Snells' law which is stated mathematically as:

n1Sintheta1 = n2Sinthetha2

Given:

n1 = 1.17

Theta1 = 40.1° = angle of incidence

Theta2 = 36.3° = angle of refraction

n2 = unknown

Substituting into the equation

n1Sin40.1 = 1.17Sin36.3°

0.6441n1 = 0.6937

n1 = 0.6937/0.6441

n1 = 1.08

8 0
3 years ago
Read 2 more answers
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