1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
svp [43]
3 years ago
14

Lisa is conducting an investigation to determine the coefficient of friction between two surfaces. She uses a 25 kg block. What

is this object's weight, in newtons?
Physics
2 answers:
artcher [175]3 years ago
7 0

Answer:

Weight, W = 245 N

Explanation:

It is given that,

Mass of the block, m = 25 kg

We need to find its weight. From Newton's second law of motion,

F=m\times a

a is the acceleration of the object

On the surface of earth, a=9.8\ m/s^2

F=25\ kg\times 9.8\ m/s^2                    

F = 245 N

So, the weight of the object is 245 N. Hence, this is the required solution.

Paladinen [302]3 years ago
4 0

Answer:

245.25

Explanation:

1 kg is 9.81 newtons

You might be interested in
All of the following are ways in which sedimentary rocks form EXCEPT
Anna71 [15]

Except A. Lava cooling

6 0
3 years ago
Which meteorites are the most useful for defining the age of the solar system? Why?
scoundrel [369]

Answer:

meteorite is a piece of interplanetary debris that lives its fiery drops during a through the earth's atmosphere and strikes the surface of the earth.

Explanation:

the meteorites which are most useful for the determination of the age of the solar system are the primitive meteorites. they consist light of colored or grey silicates mixed with metallic grains. the parent bodies of these meteorites are also mostly believed to be pieces asteriods left after they formed in the solar system.

3 0
3 years ago
Consider the following three statements: (i) For any electro-magnetic radiation, the product of the wavelength and the frequency
Scilla [17]

Answer:

A and B

Explanation:

The relation between frequency and wavelength is shown below as:

c=frequency\times Wavelength

c is the speed of light having value 3\times 10^8\ m/s

Thus, the product of the wavelength and the frequency is constant and equal to 3\times 10^8\ m/s

<u>Option A is correct.</u>

Given, Frequency = 1\times 10^{18}\ Hz

Thus, Wavelength is:

Wavelength=\frac{c}{Frequency}

Wavelength=\frac{3\times 10^8}{1\times 10^{18}}\ m

Wavelength=3\times 10^{-10}\ m

Also, 1 m = 3\times 10^{-10} Å

So,

<u>Wavelength = 3.0 Å</u>

<u>Option B is correct.</u>

As stated above, the speed of electromagnetic radiation is constant. Hence, each radiation of the spectrum travels with same speed.

<u>Option C is incorrect.</u>

3 0
3 years ago
Read 2 more answers
What is the area of the bottom of a tank 30.0 cm long and 15.0 cm wide?​
Igoryamba

Answer:

perimeter of the bottom of the tank is 450 cm

Explanation:

If you want to get area you need the Length, width,and height.

5 0
3 years ago
Read 2 more answers
What are the advantages and disadvantages of renewable and non-renewable energy?
bogdanovich [222]

Renewable energy

<u>Advantages :-</u>

1. Easily regenerate

2. Boost economic growth

3. Easily available

4. Support environment

5. Low maintenance cost

<u>Disadvantages :-</u>

1. Weather dependency

2. High installation cost

3. Noise caused by wind energy

4. Fluctuation problem (solar)

5. Intermittency issue (wind)

Non-renewable energy

<u>Advantages :-</u>

1. Concentrated energy source

2. Reliable energy source

3. Can be built anywhere

4. No radioactive waste

<u>Disadvantages :-</u>

1. Produces greenhouse gases

2. Contributes to global warming

3. Produces acid rain

4. Harmful to environment when they are burnt

<em>I hope this helps.....</em>

5 0
3 years ago
Other questions:
  • A container is filled with water to a depth of 26.2 cm. On top of the water floats a 16.1 cm thick layer of oil with a density of
    12·1 answer
  • Sinkholes can form when
    8·2 answers
  • Suppose that the electric field in the Earth's atmosphere is E = 1.16 102 N/C, pointing downward. Determine the electric charge
    15·1 answer
  • 3. As the duration of a maximal effort increases from 10 seconds or less to between 10 and 180 seconds, what factor becomes limi
    10·1 answer
  • An 88.0 kg spacewalking astronaut pushes off a 645 kg satellite, exerting a 110 N force for the 0.450 s it takes him to straight
    10·1 answer
  • What is the role of electrical forces in nuclear fission
    11·1 answer
  • What is the force of a 24.52 kg Television dropped on Pluto (acceleration of 0.59 m/s2)
    5·1 answer
  • Since velocity describes both speed and direction you can call it
    9·1 answer
  • Which of the following water waves has more energy?
    14·2 answers
  • Specialized businesses that help coordinate dealings between other companies are called:
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!