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
kolbaska11 [484]
3 years ago
11

As a delivery truck travels along a level stretch of road with constant speed, most of the power developed by the engine is used

to compensate for the energy transformations due to friction forces exerted on the delivery truck by the air and the road. If the power developed by the engine is 2.43 hp, calculate the total friction force acting on the delivery truck (in N) when it is moving at a speed of 24 m/s. One horsepower equals 746 W.
Physics
1 answer:
mario62 [17]3 years ago
4 0

Answer:

F=75.53N

Explanation:

To calculate the power we define the equation,

P=Fv

Where,

F= Force

V= Velocity,

Here we have that 2.43hp is equal to 1812.78W,

clearing F,

F=\frac{P}{v} = \frac{1812}{24}\\F=75.53N

You might be interested in
During a solar eclipse our tiny moon totally blocks the sun because of .....
Vaselesa [24]

During a total solar eclipse, the moon passes between Earth and the sun. This completely blocks out the sun’s light. However, the moon is about 400 times smaller than the sun. How can it block all of that light?

4 0
3 years ago
A 60 kg man jumps down from a 0.8 m table. What is the speed when he
Rom4ik [11]

Answer: Speed = 4 m/s

Explanation:

The parameters given are

Mass M = 60 kg

Height h = 0.8 m

Acceleration due to gravity g= 10 m/s2

Before the man jumps, he will be experiencing potential energy at the top of the table.

P.E = mgh

Substitute all the parameters into the formula

P.E = 60 × 9.8 × 0.8

P.E = 470.4 J

As he jumped from the table and hit the ground, the whole P.E will be converted to kinetic energy according to conservative of energy.

When hitting the ground,

K.E = P.E

Where K.E = 1/2mv^2

Substitute m and 470.4 into the formula

470.4 = 1/2 × 60 × V^2

V^2 = 470.4/30

V^2 = 15.68

V = square root (15.68)

V = 3.959 m/s

Therefore, the speed of the man when hitting the ground is approximately 4 m/s

4 0
3 years ago
A spaceship from a friendly, extragalactic planet flies toward Earth at 0.203 0.203 times the speed of light and shines a powerf
Serjik [45]

Answer:

567.321nm

Explanation:

See attached handwritten document for more details

7 0
3 years ago
Read 2 more answers
Keisha is making a diagram of a simple machine in the body.
Amiraneli [1.4K]

Answer:

Sorry for being late. It is...

A.) X: Load, Y: Fulcrum, Z: Lever

3 0
3 years ago
Read 2 more answers
Taden has found a table of the atmospheric layers of the Sun. However, he can’t make out the names of the layers in the chart.
Alexeev081 [22]

The sun is a ball of hot gases containing different kinds of elements at different cores. It has a very high temperature that radiates all throughout the Milky Way galaxy. The sun has three main parts; photosphere, chromospheres and corona. The outer core of a star located at the chromospheres contains mostly of hydrogen. Inside the hydrogen is helium then carbon, oxygen, neon, magnesium silicon and the inert gas. The photosphere is scattered by the loose electrons in the corona’s plasma.

4 0
3 years ago
Read 2 more answers
Other questions:
  • Coherent microwaves of wavelength 5.00 cm enter a tall, narrow window in a building otherwise essentially opaque to the microwav
    8·1 answer
  • I would appreciate some help.
    11·1 answer
  • How far will a car travel if it accelerates from rest at a rate of 2.25<br> m/s for 6.50 seconds?
    11·1 answer
  • Can you change how much power you use while exercising?
    14·1 answer
  • The mechanical energy of a bicycle at the top of a hill is 6,000 J. The bicycle stops at the bottom of the hill by applying the
    11·1 answer
  • If two capacitors, A and B, have the same area and dielectric constant, but the distance between the plates of A is twice the di
    13·1 answer
  • Given that the collision is elastic and glider 2 is initially at rest (v2,i =0), please use below Eqs. to explain why
    10·1 answer
  • A car is driving across a street. It's change in displacement is 50 m. If it started with a velocity of 5 m/s and ended with a v
    10·1 answer
  • HELLO I NEED YOU HELP WITH THIS SCIENCE QUESTION NO LINKS!!!
    5·1 answer
  • NEED HELP!! PHYSICS PROBLEM
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!