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dedylja [7]
2 years ago
13

7. A 2.0 kg block, starting from rest, is pushed by a

Physics
1 answer:
11Alexandr11 [23.1K]2 years ago
7 0

Answer:

(A) 0.8 kgm/s

Explanation:

because of the even ground it would only slow down

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A ski tow operates on a slope of angle 15.6 ∘ of length 340 m . The rope moves at a speed of 12.7 km/h and provides power for 53
GREYUIT [131]

Answer:

P = 34034.2 Watt

Explanation:

As we know that the slope angle is given as

\theta = 15.6^0

now the weight of the rider along the slope is given as

W = mgsin\theta

W = 69(9.81)sin15.6

W = 182 N

now total weight of all 53 riders along the slope is given as

F = 53 W

F = 9647.5 N

now the speed of the rope is given as

v = 12.7 km/h = 3.53 m/s

now the power required is given as

P = F.v

P = 9647.5(3.53)

P = 34034.2 Watt

3 0
2 years ago
How does gas exert pressure? Explain using the change in momentum.
san4es73 [151]

Answer:

The molecules are continually colliding with each other and with the walls of the container. When a molecule collides with the wall, they exert small force on the wall The pressure exerted by the gas is due to the sum of all these collision forces. The more particles that hit the walls, the higher the pressure.

4 0
2 years ago
Read 2 more answers
A suspension bridge with weight uniformly distributed along its length has twin towers that extend 65 meters above the road surf
Fynjy0 [20]

Answer:

16.25 m

Explanation:

we know that the equation pf parabola

y=kx^2

from bellow figure the coordinate of parabola is (600,65) that is y=600 and x=65

putting the the value of y and x in the equation of parabola

65=k600^2

k=0.0001805

now the equation is

y=0.0001805x^2

we have to find the value of y at x=300m

so y=0.0001805\times 300^2

y=16.25 m

4 0
3 years ago
2
BigorU [14]
Could you maybe show us the diagram
3 0
3 years ago
Help pleaseeeeeeeeeeeeee
77julia77 [94]

Answer:

hello the answer is 47m/s

8 0
3 years ago
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