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3 years ago

Which workout schedule would be BEST suited for a weight-lifting workout that builds both strength and endurance

Physics

2 answers:

Anvisha [2.4K]3 years ago

6 0

On enginuity the answer is C.

VLD [36.1K]3 years ago

4 0

My workout schedule is day on - day off

This helps the body rest after the work out and let it gain/build muscle mass

Good luck

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A starship blasts past the earth at 2.0*10^8 m/s .Just after passing the earth, the starship fires a laser beam out its back of

Vilka [71]

Answer:

at the speed of light ( $c=3.0\cdot 10^8 m/s$ )

Explanation:

The second postulate of the theory of the special relativity from Einstein states that:

"The speed of light in free space has the same value c in all inertial frames of reference, where $c=3.0\cdot 10^8 m/s$ "

This means that it doesn't matter if the observer is moving or not relative to the source of ligth: he will always observe light moving at the same speed, c.

In this problem, we have a starship emitting a laser beam (which is an electromagnetic wave, so it travels at the speed of light). The startship is moving relative to the Earth with a speed of 2.0*10^8 m/s: however, this is irrelevant for the exercise, because according to the postulate we mentioned above, an observer on Earth will observe the laser beam approaching Earth with a speed of $c=3.0\cdot 10^8 m/s$ .

7 0

3 years ago

A child is riding a merry-go-round that has an instantaneous angular speed of 12 rpm. If a constant friction torque of 12.5 Nm i

sammy [17]

Answer:

$-0.25 rad/s^2$

Explanation:

The equivalent of Newton's second law for rotational motions is:

$\tau = I \alpha$

where

$\tau$ is the net torque applied to the object

I is the moment of inertia

$\alpha$ is the angular acceleration

In this problem we have:

$\tau = -12.5 Nm$ (net torque, with a negative sign since it is a friction torque, so it acts in the opposite direction as the motion)

$I=50.0 kg m^2$ is the moment of inertia

Solving for $\alpha$ , we find the angular acceleration:

$\alpha = \frac{\tau}{I}=\frac{-12.5 Nm}{50.0 kg m^2}=-0.25 rad/s^2$

3 0

3 years ago

A hockey player applies an average force of 80.0 N to a

denpristay [2]

Answer:

$Impulse = 8.0Ns$

Explanation:

Given

$Force = 80.0N$

$Mass = 0.25kg$

$Time = 0.10s$

Required

Determine the impulse

The impulse is calculated as follows:

$Impulse = Force * Time$

Substitute values for Force and Time

$Impulse = 80.0N * 0.10s$

$Impulse = 8.0Ns$

<em>Hence, the impulse experienced is 8.0Ns</em>

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3 years ago

Which statement is true regarding copper's ability to conduct electricity?

zhenek [66]

<span>Copper is a good conductor of electricity because its atoms have a loosely held electron in their outer shell that is able to move freely to other atoms.</span>

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3 years ago

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You go outside on a clear night the moon looks like half - circle. About a week later on another clear night you go outside ,and

ZanzabumX [31]

You will see about half of the moon after a week... the week after the next week, you will probably see the full moon

hope this helps and you rate me good

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3 years ago

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