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
Brut [27]
3 years ago
8

A mover pushes a 30.0 kg crate across a wooden floor at a constant speed of 0.75 m/s. If the coefficient of static friction for

wood-on-wood is 0.20, what is the normal force exerted by the floor on the crate?
Physics
1 answer:
liraira [26]3 years ago
3 0

Answer:

294.3 N

Explanation:

In this situation, we are told that the crate is not accelerating in the horizontal plane. But also it is not accelerating in the vertical plane. Meaning that the sum of all vertical forces add up to zero.

Fnet =  ma

Weight + Normal force = mass *  acceleration

-(30 kg * 9.81 m/s²) + Normal force = 30.0 kg * 0 m/s²

                                  Normal force = 294.3 N

You might be interested in
The magnetic field a distance 2 cm from a long straight current-carrying wire is 2 × 10–5 t. the current in the wire is:
Sliva [168]

Current in the wire = 2 A

Explanation:

the magnetic field is given by

B= \frac{\mu i}{2\pi r}

μo= 4π x 10⁻⁷ Tm/A

i= current

r=0.02 m

B = magnetic field= 2 x 10⁻⁵ T

2 x 10⁻⁵= (4π x 10⁻⁷)(i) / (2π*0.02)

i=2 A

6 0
3 years ago
What speed<br> covers 17 miles in 15 mins?
asambeis [7]
68 miles per hour 1.1333 miles per minute
5 0
3 years ago
Which of the following best describes Earth's crust, according to the theory of plate tectonics?
FrozenT [24]

Answer:

the Earth's crust is broken into about 12 plates that float on hotter, softer rocks in the underlying mantle

Explanation:

8 0
3 years ago
The first three inches of the spinal cord is called the
pantera1 [17]
Hi!
I think the answer is Brainstem. I hope this helps! :)
8 0
3 years ago
Which is the best definition of a wave?
Klio2033 [76]

Concept:

Wave: It is the disturbance in which the energy is transferred from one place to another place. During the propagation of the wave, medium particles do not move. They vibrate at their position in to and fro form.

In case of the Transverse wave, medium particles vibrate perpendicular to the direction of the wave while in case of Longitudinal wave, they vibrate along the direction of the wave.

Hence, the best definition of the wave will be the disturbance that transfers the energy from one place to another place.

4 0
3 years ago
Other questions:
  • What is the value of a such that p(z &lt; -1.96 = a/2?
    10·1 answer
  • A variable is defined as anything that
    7·1 answer
  • The equation for the speed of a satellite in a circular orbit around the earth depends on mass. Which mass?
    9·1 answer
  • Explain why an object’s weight is dependent upon where in the universe it is located.
    15·1 answer
  • What is the velocity of a car that travels -50 meters in 5 seconds then 10 meters in 5 seconds
    7·1 answer
  • How do the meetings of the words exercise and fitness differ?
    7·1 answer
  • As the boat in which he is riding approaches a dock at 3.0 m/s, Jasper stands up in the boat and jumps toward the dock. Jasper a
    11·1 answer
  • How fast is a plane that traveled 400 km in 30 minutes? Give the speed in km/hr.
    11·1 answer
  • Select the best reason for studying the past and its effect on us today based on "The Terror of the Middle Ages." A. to learn wh
    14·2 answers
  • What is the formula of the force??<br><br>​
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!