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3 years ago

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

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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

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$v_0 = 2.834 \frac {m}{s}$

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:

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Explanation:

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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

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$d=2.05 m$

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

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