3 years ago

An optical device that reflects light ?

Physics

2 answers:

Paul [167]3 years ago

5 0

Answer:

Mirror

Explanation:

Monica [59]3 years ago

5 0

An optional device that reflects light is a mirror

You might be interested in

Which is the term for the different forms of a gene for a given trait?

sveta [45]

Answer:

Alleles.

Explanation:

6 0

3 years ago

Read 2 more answers

It is well known that runners run more slowly around a curved track than a straight one. One hypothesis to explain this is that

barxatty [35]

Answer:

$percentage = 6.27 %$

Explanation:

As we know that when runner is moving on straight track then the net force on his feet is given as

$F_s = mg$

while when runner is moving on circular track then we have

$F_c = \sqrt{(mg)^2 + (\frac{mv^2}{R})^2}$

$F_c = m\sqrt{g^2 + \frac{v^4}{R^2}}$

$F_c = m\sqrt{9.8^2 + \frac{8^4}{18^2}}$

$F_c = m(10.42)$

now percentage change is given as

$percentage = \frac{F_c - F_s}{F_s} \times 100$

$percentage = \frac{m(10.42) - m(9.81)}{m(9.81)}\times 100$

$percentage = 6.27 %$

6 0

3 years ago

Lumbar nerves transmit signals that allow us to?

labwork [276]

Lumbar nerves transmit signals that allow us to walk. They are a pivotal part of the human body, and without them we would be immobile. Hope this helps.

7 0

4 years ago

Read 2 more answers

In a game of ice hockey, you use a hockey stick to hit a puck of mass 0.16 kg that slides on essentially frictionless ice. Durin

Grace [21]

Answer:

12N

Explanation:

given- mass, acelation

Fnet=ma= .16kg*75m/s2

Fnet=12 N only force no friction given.

8 0

3 years ago

If I exert a 203 N force on a 58 kg box, what will the acceleration of the box be?

Anit [1.1K]

Answer:

Explanation:

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

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

m is the mass

f is the force

From the question we have

$a = \frac{203}{58} = \frac{7}{2} \\$

We have the final answer as

Hope this helps you

7 0

3 years ago