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
strojnjashka [21]
3 years ago
9

Why do truckers use a ramp when loading a truck if the work required is the same with or without a ramp?

Physics
1 answer:
RoseWind [281]3 years ago
7 0
Shut up no one is going to help u
You might be interested in
Anybody from India ?​
Lelu [443]

Answer:

No,why you say that

Explanation:

7 0
2 years ago
Read 2 more answers
The water in a river flows uniformly at a constant speed of 2.50 m/s between parallel banks 80.0 m apart. You are to deliver a p
NISA [10]

Answer:

a)  The swimmer should travel perpendicular to the bank to minimize the spent in getting to the other side.

b) 133.33 m

c) 53.13°

d) 106.67 m

Explanation:

a) The swimmer should travel perpendicular to the bank to minimize the spent in getting to the other side.

b) velocity = distance * time

Let the velocity of the swimmer be v_{s} = 1.5 m/s

The separation of the two sides of the river, d = 80 m

The time taken by the swimmer to get to the other end of the river bank,

t = \frac{d}{v_{s} }

t = 80/1.5

t = 53.33 s

The swimmer will be carried downstream by the river through a distance, s

Let the velocity of the river be v_{r} = 2.5 m/s

S = v_{r} t

S = 53.33 * 2.5

S = 133.33 m

c) To minimize the distance traveled by the swimmer, his resultant velocity must be perpendicular to the velocity of the swimmer relative to water

That is ,

cos \theta = \frac{v_{s} }{v_{r} } \\cos \theta = 1.5/2.5\\cos \theta = 0.6\\\theta = cos^{-1} 0.6\\\theta = 53.13^{0}

d) Downstream velocity of the swimmer, v_{y} = v_{s} sin \theta\\

v_{y} = 1.5 sin 53.13\\v_{y} = 1.2 m/s

The vertical displacement is given by, y = v_{y} t

80 = 1.2 t

t = 80/1.2

t = 66.67 s

the horizontal speed,

v_{x} = 2.5 - 1.5cos53.13\\v_{x} = 1.6 m/s

The downstream horizontal distance of the swimmer, x = v_{x} t

x = 1.6 * 66.67

x = 106.67 m

7 0
3 years ago
How much work is done on a 75 newton bowling ball when you carry it horizontally across a 10 meter room
svlad2 [7]

F = force applied to hold the weight of the bowling ball = weight of the bowling ball = 75 N

d = distance through which the bowling ball is moved horizontally = 10 meter

θ = angle between the force in vertically upward direction  and displacement in horizontal direction = 90

W = work done on the bowling ball

work done on the bowling ball is given as

W = F d Cosθ

inserting the values

W = (75) (10) Cos90

W =  (75) (10) (0)

W = 0 J

6 0
2 years ago
Numbered 8 nowwwwwww
amm1812

Torque =  r x F

|F| =  mg =  60 * 10 N = 600 N ( assuming g ~ 10m/s^2)

distance of fulcrum = torque / Force = 90/600 m = .15 m.

7 0
3 years ago
What countries could benefit most from solar energy
Alecsey [184]
Countries longer day for example in the Middle East could benefit more but Alaska has more night like longer night which is why it would hard to benefit from the solar panels there.

Hoped this helped
5 0
3 years ago
Other questions:
  • 1. Which mathematical representation correctly identifies impulse?
    6·1 answer
  • A 500.0-kilogram cannon is at rest on a frictionless surface. A remote triggering device causes a 5.0-kilogram projectile to be
    13·1 answer
  • A tire hanging from a tree is at rest. The force of gravity is pulling down on the tire. Another force, called tension, is pulli
    11·2 answers
  • An elevator ascends at a constant speed of 4 m/s, how much time is required for the elevator in order to travel 120 m upwards?
    13·1 answer
  • Imagine you are on an airplane. Your plane has flown from 30 degrees North to 42 degrees North. How far have you flown?
    8·1 answer
  • Why is dark silicon currently necessary?
    12·1 answer
  • What muscle movement do we use to close a joint.
    10·1 answer
  • Edwin Hubble discovered that:
    12·1 answer
  • During an isothermal process, 10 j of heat is removed from an ideal gas. What is the work done by the gas in the process?
    12·1 answer
  • identify each type of radiation as ionizing or non-ionizing. remember that ionizing radiation deposits enough energy when absorb
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!