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Shalnov [3]
3 years ago
11

Which of the following describes an element?

Physics
1 answer:
bixtya [17]3 years ago
8 0

Answer:

A substance made of two or more types of atoms

Explanation:

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A force of 100.0N is appliesd to an object of mass 85.0kg. what is the object acceleration
kumpel [21]

Answer:

<h2>1.18 m/s²</h2>

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

a =  \frac{f}{m}  \\

f is the force

m is the mass

From the question we have

a =  \frac{100}{85}  =  \frac{20}{17}  \\  = 1.176470...

We have the final answer as

<h3>1.18 m/s²</h3>

Hope this helps you

3 0
3 years ago
Total internal reflection can most accurately be described as...
Phoenix [80]

Answer:

a. reflection of all the light at a surface.

Explanation:

When light rays passing from the denser medium to the rarer medium and the angle of incidence is greater  than the critical angle, the refraction of light does not take place and the incident ray is totally reflected back  into the denser medium. This phenomenon is called total internal reflection.

There are two conditions that need to be fulfilled in order for the total internal reflection to take place:

1. The ray of light should be incident from denser to rarer medium.

2. The angle of incidence should be greater than the critical angle.

Therefore, the correct option will be:

<u>a. reflection of all the light at a surface.</u>

4 0
3 years ago
You can see yourself in the mirror because?
jok3333 [9.3K]
Mirrors reflect light waves.
3 0
3 years ago
Read 2 more answers
Richard is driving home to visit his parents. 150 mi of the trip are on the interstate highway where the speed limit is 65 mph .
Serggg [28]

Answer:

t = 25.5 min

Explanation:

To know how many minutes does Richard save, you first calculate the time that Richard takes with both velocities v1 = 65mph and v2 = 80mph.

t_1=\frac{x}{v_1}=\frac{150mi}{65mph}=2.30h\\\\t_2=\frac{x}{v_2}=\frac{150mi}{80mph}=1.875h

Next, you calculate the difference between both times t1 and t2:

\Delta t=t_1-t_2=2.30h-1.875h=0.425h

This is the time that Richard saves when he drives with a speed of 80mph. Finally, you convert the result to minutes:

0.425h*\frac{60min}{1h}=25.5min=25\ min\ \ 30 s

hence, Richard saves 25.5 min (25 min and 30 s) when he drives with a speed of 80mph

3 0
3 years ago
A jet lands at 80.0 m/s, the pilot applying the brakes 2.0 s after landing.
asambeis [7]

Answer:

Schiff by chili I hoop hookup

6 0
4 years ago
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