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makkiz [27]
4 years ago
15

During resistance exercise, muscles are __________. A. working against a force B. repeatedly contracted C. concerted in movement

D. all of the aboveImproving muscular strength and endurance slows bone density loss.
Physics
1 answer:
ExtremeBDS [4]4 years ago
3 0

Answer:

the answer is A. working against a force

Explanation:

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3. Why do we revise laws?
SpyIntel [72]

Answer:

Everyone is held accountable to the same laws, and those laws protect our fundamental rights. This is the foundation of the rule of law in the United States. We need new laws because life and the world keep revolving and changing. We therefore need new laws to match the latest trending events in the country.

3 0
3 years ago
0.000236 kg has how many<br> significant figures?
SCORPION-xisa [38]

Answer:

6

Explanation:

everything after the decimal is counted

4 0
3 years ago
Upon impact, bicycle helmets compress, thus lowering the potentially dangerous acceleration experienced by the head. A new kind
Nana76 [90]

Answer:

-15.3g

Explanation:

We can find the acceleration by using the following SUVAT equation:

v^2 - u^2 = 2ad

where:

v = 0 is the final velocity (the headform comes to rest)

u = 6.0 m/s is the initial velocity before the impact

d = 12.0 cm = 0.12 m is the distance covered during the impact

a is the acceleration

Solving for a, we get

a=\frac{v^2-u^2}{2d}=\frac{0^2-6^2}{2(0.12)}=-150.0 m/s^2

Where the negative sign means it is a deceleration.

Now we know that

g=9.8 m/s^2

So we can express the acceleration in units of g:

a=\frac{-150.0}{9.8}=-15.3g

4 0
3 years ago
A uniform rod of length L rests on a frictionless horizontal surface. The rod pivots about a fixed frictionless axis at one end.
Svet_ta [14]

Answer: a) 0.315 (V/L)

Explanation:

From Conservation of angular momentum, we know that

L1 = L2 ,

Therefore MV L/2 = ( Irod + Ib) x W

M/4 x V x L/2 = (M (L/2)^2 + 1/3xMxL^2) x W

M/8 X VL = (ML^2/16 + ML^2 /3 )

After elimination we have,

V/8 = 19/48 x L x W

W = 48/8 x V/19L = 6/19 x V/L

Therefore W = (0.136)X V/L

6 0
3 years ago
Why are some planets and moons more geologically active than others?
slamgirl [31]

Answer:

Some planets and moons are geologically active as, earth is the planet which are significantly highest active planet ion the solar system. The geological activation are depends or vary from planet to another planet and one moon to another moon. Moon is the huge area which covered and the planets and moon are the highest temperate then, it is geologically active.

5 0
3 years ago
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