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
Zarrin [17]
3 years ago
8

a rock with mass of 5kg is carried up a small hill 10 meters high. how much work had to be done in carrying the rock up hill

Physics
1 answer:
aliya0001 [1]3 years ago
6 0

Answer:

490Nm

Explanation:

Given the following :

Mass of rock = 5kg

Height or distance = 10 meters

A rock with mass of 5kg is carried up a small hill 10 meters high. how much work had to be done in carrying the rock up hill?

Workdone is product of force and distance.

Workdone = force * distance

Recall :

Force = mass * acceleration due to gravity (g)

g = 9.8m/s^2

Force = 5 * 9.8 = 49 N

Therefore,

Workdone = 49 × 10 = 490Nm

You might be interested in
This person does work to stretch the rubber band. When will the potential energy be the greatest?
antiseptic1488 [7]

the rubber band will be at its greatest when its fully stretched out

7 0
3 years ago
Oxygen forms many compounds.<br> Which two compounds of oxygen are small molecules?
Liono4ka [1.6K]

Answer:

Water and Oxides such as iron oxide or rust

Explanation:

8 0
3 years ago
If themass is 50kg, what weight of water is to be displaced to float on water? why
ludmilkaskok [199]

Answer:if youre looking for the weight of the thermas in genral it should be 500n

Explanation:using the formula w=mg

w=500x10

giving us 500 newtons which is the weight.

5 0
1 year ago
If you wanted to
VLD [36.1K]

Answer:

Option C

Explanation:

According to the formula

  • \\ \boxed{\sf R=\rho\dfrac{\ell}{A}}

So

If we use wide wire we increase the area of cross section so resistance decreases

5 0
2 years ago
Peter designed a road with a curve of radius 30 m that is banked so that a 950 kg car traveling at 40.0 km/h can round it even i
spayn [35]

Answer:

v = 15.56 m/s

v = 56 km/h

Explanation:

When coefficient of friction is approximately zero then we have

F_ncos\theta = mg

F_n sin\theta = \frac{mv^2}{R}

tan\theta = \frac{v^2}{Rg}

here we know that

v = 40 km/h = 11.11 m/s

R = 30 m

tan\theta = \frac{11.11^2}{30\times 9.81}

\theta = 22.75 degree

now when friction coefficient is 0.30 then we have

F_n cos\theta = mg + F_f sin\theta

F_f cos\theta + F_n sin\theta = \frac{mv^2}{R}

now we have

v = \sqrt{Rg(\frac{\mu + tan\theta}{1 - \mu tan\theta})}

v = \sqrt{30(9.81)(\frac{0.30 + tan22.75}{1 - (0.30) tan22.75})}

v = 15.56 m/s

v = 56 km/h

3 0
3 years ago
Other questions:
  • How can you produce more power than an excavator?
    14·2 answers
  • Under metric prefixes, if a meter were divided into 100 equal-sized subunits, a single unit would be called a
    11·1 answer
  • A partially evacuated airtight container has a tight-fitting lid of surface area 79.9 cm2 and negligible mass. If the force requ
    15·1 answer
  • Assume that the force exerted on each crutch by the ground is directed along the crutch, as the force vectors in the drawing ind
    11·1 answer
  • slader A baseball player slides to a stop on level ground. Using energy consideration, calculate the distance the 65 kg baseball
    8·1 answer
  • A 55 year old woman is awakened by an excruciating pain that radiates from her right abdomen to her flank on the same side
    9·1 answer
  • What is the internal energy of 3.00mol of N2 gas at 25c?
    7·1 answer
  • After travelling 4.0 km, the train reaches its maximum speed. it continues at this constant speed on the next section of the tra
    15·1 answer
  • 20kVA, 300/240 V, 50Hz singal phase transformer has 80 turns on secondary winding. calculate number of primary winding turns, fu
    12·1 answer
  • The figure below shows a motorcycle leaving the end of a ramp with a speed of 39.0 m/s and following the curved path shown. At t
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!