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olya-2409 [2.1K]
3 years ago
10

What is potential energy called that is associated with objects that can be stretched

Physics
1 answer:
Umnica [9.8K]3 years ago
5 0
Elastic potential energy
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If 1.4% of the mass of a human body is calcium, how many kilograms of calcium are there in a 195-pound man?
Mamont248 [21]

Answer:

1.241 kg

Explanation:

The mass of the man in kg is 195 pound * (1/2.2) kg/pound = 195/2.2 = 88.64 kg

If 1.4% of the mass of a human body is calcium, then the mass of calcium inside the 88.64 kg man is

1.4% * 88.64 = 88.64*1.4/100 = 1.241 kg

So there's 1.241 kg of calcium inside a 195-pound man

8 0
3 years ago
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A 2.0-ohm resistor is connected in a series with a 20.0 -V battery and a three-branch parallel network with branches whose resis
Llana [10]

Answer:

Explanation:

Resolving the parallel resistor branches

\frac{1}{Rtotal} =\frac{1}{8.0ohm} +\frac{1}{8.0ohm} +\frac{1}{8.0ohm} =2.67Ohm

The equivalent resistor is now in series with the 2.0 Ohm resistor

so, by using Ohm's Law

I=\frac{V}{Rtotal+R} \\I=\frac{20.0V}{2.67Ohm+2.0Ohm} \\\\I= 4.28A

4 0
2 years ago
Sounds travel faster in Question 1 options: warmer air. cooler air. Temperature does not influence the speed of sound. a vacuum.
olya-2409 [2.1K]

Answer:

warmer air

Explanation:

the particles are more excited which increases the probability that the particles will bump into each other

8 0
2 years ago
These plans are an accompaniment to mechanical lifting devices in reducing on-the-job injuries. they address specific patient ne
lilavasa [31]
For the answer to the question, ergonomics<span> is the science of fitting the job to the worker. When there is a mismatch between the physical requirements of the job and the physical capacity of the worker, work-related musculoskeletal disorders (MSDs) can result. Ergonomics is the practice of designing equipment and work tasks to conform to the capability of the worker, it provides a means for adjusting the work environment and work practices to prevent injuries before they occur.</span>
4 0
2 years ago
A 0.046 kg golf ball hit by a driver can accelerate from rest to 67 m/s in 1 ms while the driver is in contact with the ball. Ho
Flauer [41]

Answer:

Average force = 67 mn

Explanation:

Given:

Initial velocity u = 0 m/s

Final velocity v = 67 m/s

Time t = 1 ms = 0.001 sec.

Computation:

Using Momentum theory

Change in momentum  = F × Δt

 (v-u)/t =  F × Δt

F × 0.001 = (67 - 0)/0.001

F= 67,000,000

Average force = 67 mn

3 0
2 years ago
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