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
Bess [88]
3 years ago
13

A 150-newton force, applied to a wooden crate at an angle of 30° above the horizontal, causesthe crate to travel at constant vel

ocity across a horizontal wooden floor.
1. Calculate the magnitude of the normal force exerted by the floor on the crate. [Show all work,including the equation and substitution with units.]2. Determine the magnitude of the frictional force acting on the crate.3. Calculate the magnitude of the horizontal component of the 150-newton force. [Show all work,including the equation and substitution with units.]
Physics
1 answer:
omeli [17]3 years ago
3 0

Answer:

Explanation:

A component of 150 N in vertical direction will reduce the magnitude of reaction force.

reaction force exerted by the floor

= mg - 150 sin 30

where m is mass of the crate .

the magnitude of the horizontal component of the 150-newton force

150 cos30

= 130 N

This force tries to pull the crate in forward direction with acceleration but it has no acceleration . It is so because frictional force of equal magnitude acts on it in opposite direction which makes the net force acting on it equal to zero.

Hence frictional force is equal to 150 cos 30.

= 130 N .

You might be interested in
HELP HELP HELP I WILL MARK AS BRAINLIEST
DIA [1.3K]

Answer:

sun, jupiter, earth, moon

Explanation:

how big they are

3 0
3 years ago
Read 2 more answers
Help ASAP ITS DUE IN 30 MIN
Katena32 [7]

can't read it, need larger picture

5 0
3 years ago
What would happen if both the radius and mass of a planet were cut in half
Shtirlitz [24]

Explanation:

According to formula

g = GM/R^2

when mass is halved the value of g becomes half but when radius is halved the value of g increases 4 times.

As a result of both value of g becomes twice.

5 0
3 years ago
Yung's experiment is performed with light of wavelength 502 nm from excited helium atoms. Fringes are measured carefully on a sc
Lady bird [3.3K]

Answer:

1.082 mm

Explanation:

From the question, we can see that we were given The following

Wavelength of the atoms, λ = 502 nm = 502*10^-9 m

Radius of the screen away from the double slit, r = 1.1 m

We know that Y(20) = 10.2 mm = 10.2*10^-3 m

d = (20 * R * λ) / Y(20)

d = (20 * 1.1 * 502*10^-9)/10.2*10^-3

d = 1.1*10^-5 / 10.2*10^-3

d = 1.082 mm

Therefore, we can say that the distance of separation between the two slits is 1.082 mm

4 0
3 years ago
Which list shows the development of atomic models in chronological order?
ratelena [41]
The correct option is PLUM PUDDING, SOLAR SYSTEM, ELECTRON CLOUD. 
J. J Thompson was the scientist who proposed the plum pudding theory of atomic model. Neil Borh was the one who developed the solar system model of atomic theory while the electron cloud model of atomic theory that is presently been used was developed by an Australian scientist called Erwin Schrodinger.<span />
5 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following body systems has a component that stops functioning and leads to diabetes?
    9·1 answer
  • A very massive object A and a less massive object B move toward each other under the influence of gravity. Which force, if eithe
    12·1 answer
  • A student has a mass (including clothes and shoes) of 65.0 kg. She drinks a 12 oz. can of soda, with a nutritional energy conten
    15·1 answer
  • Two automobiles of equal mass approach an intersection. One vehicle is traveling with velocity 14.0 m/s toward the east and the
    6·1 answer
  • Which of the following observations represent conclusive evidence of an interaction? (Select all that apply.)
    6·1 answer
  • Two identical small metal spheres with q1 &gt; 0 and |q1| &gt; |q2| attract each other with a force of magnitude 81 mN when sepa
    12·1 answer
  • A person pushes on a 57-kg refrigerator with a horizontal force of 267 N; the - sign indicates that the force points in the +x d
    5·1 answer
  • Place the following types of electromagnetic radiation in order from LOWEST energy
    14·1 answer
  • If i step on a shard of glass while playing volleyball barefoot, which path will the reflex to pull my foot up follow?
    12·1 answer
  • Light with wavelength in air ( lambdaair ) is incident on a oil slick ( noil = 1. 25) floating on the ocean ( nwater = 1. 33). w
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!