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Sindrei [870]
3 years ago
11

A motor develops 80 kW of power as it lifts a loaded elevator 20.5 m in 45 s. How much force does the motor exert? *

Physics
1 answer:
yuradex [85]3 years ago
7 0

Answer:

F=1.3⋅105N

Explanation:

It's common knowledge.

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Calculate the capacitance of a system that stores 9.4 x 10-10 C of charge at
natka813 [3]

Answer:

A. 1.88\times 10^{-11}\,F.

Explanation:

By definition of Electric Capacitance, the capacitance of the system (C), in farads, is described by the following formula:

C = \frac{q}{V} (1)

Where:

q - Electric charge, in coulombs.

V - Voltage, in volts.

If we know that q = 9.4\times 10^{-10}\,C and V = 50\,V, then the capacitance of the system is:

C = \frac{9.4\times 10^{-10}\,C}{50\,V}

C = 1.88\times 10^{-11}\,F

The correct answer is A.

8 0
3 years ago
The most common type of lighting unit utilized in street lighting is:
Juli2301 [7.4K]
<span>Option C. The sodium vapor lamp is a gas discharge lamp that uses sodium vapor for the production of light. It is an efficient lighting source that provides lumens per watt and produces bright yellow. It has a monochromatic light that makes its applications are reduced. It is used in street lighting, streets, highways, etc.</span>
3 0
4 years ago
A metal rod of length 2.0 m is moved at 6.0 m/s in a direction perpendicular to its length. A 5.0 mT magnetic field is perpendic
Lerok [7]

Answer:

<h2>The potential difference is 60mV</h2>

Explanation:

 This problem bothers on  application of the expression for motion emf which is expressed as

E= Blv

where B= magnetic field in Tesla

           l= length of the conductor

           v= speed of conductor

Given data

l= 2 meters

v= 6 m/s

B= 5 Tesla

Applying the formula we have

E=5*2*6= 60mV

7 0
3 years ago
A student made the table shown to list some contact and non-contact forces. Examples of Forces Contact Forces Non-Contact Forces
aleksandr82 [10.1K]

Answer:

the second one is incorrect

Explanation:

I am smart and took the test

5 0
3 years ago
Chang sees the following formula on a website about Newton’s second law.
yarga [219]
The correct answer is the correct answer is A
3 0
3 years ago
Read 2 more answers
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