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topjm [15]
3 years ago
12

Deperate need of HELP! MARKING BRAINLIEST

Physics
2 answers:
Shtirlitz [24]3 years ago
6 0

Answer:

yes, what's your question. l will help if I can.

Alex3 years ago
5 0
I can try to help ^^
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What causes the pressure to increase as you go deeper below the crust?
Masteriza [31]

The deeper you go, the more rock must be supported so the more force is required and the pressure goes up.

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3 years ago
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To pull a 53 kg crate across a horizontal frictionless floor, a worker applies a force of 180 N, directed 35° above the horizont
Lorico [155]

Answer

given,

mass of the crate  = 53 Kg

force applied by the worker = 180 N

Angle made with the horizontal = 35°

crate moves = 2.9 m

a) The work done equals the force in the direction of the displacement, times the displacement

W = F_x ×d

W = 180 cos 35° × 2.9

W = 427.6 J

b) A force that is perpendicular to the direction of the displacement does not do any work so work done by gravitational force is zero

c) Similarly for the normal force the work done will be zero.

d) Total work done by the crate is equal to 427.6 J

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3 years ago
If I measure the current to be 0.5 A and the voltage is 4.5 V. What is my Power?
Korvikt [17]
As we know that P=IV so P = (0.5A)(4.5V)
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6 0
3 years ago
What is the wavelength of a sound wave with a frequency of 50hz (speed of sound is 342 m/s?
marysya [2.9K]

6.84m

Explanation:

According to this formula

<span>speed of wave=wavelength×frequency</span>

you have

<span>wavelength=<span>speedfrequency</span>=<span><span>342 m<span>s<span>−1</span></span></span><span>50<span>s<span>−1</span></span></span></span>=<span>6.84 m</span></span>

7 0
3 years ago
You wish to make a simple amusement park ride in which a steel-wheeled roller-coaster car travels down one long slope, where rol
Dahasolnce [82]

Answer:

The speed  of roller coaster at the ground is 41.6 m/s.

Explanation:

mass of roller coaster, m = 756.5 kg

height, h = 88.2 m

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Use conservation of energy

Potential energy at height = kinetic energy at bottom

m gh = \frac{1}{2}mv^2\\\\9.8\times 88.2= 0.5\times v^2\\\\v = 41.6 m/s

5 0
3 years ago
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