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2 years ago

8

Assume that two cars have the same kinetic energy, but that the red car has twice the speed of the blue car. We then know that t

he red car has ____ mass as the blue car.

1 answer:

Anna71 [15]2 years ago

8 0

Answer:

equal

Explanation:

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3 years ago

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<span>B. Carrying capacity determines maximum population size.</span>

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2 years ago

NEED HELP ASAP WILL MARK BRAINLIEST

MissTica

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Explanation:

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2 years ago

Read 2 more answers

Last Thanksgiven my family and I went to Atlanta, my father drove the car at a speed of 80km/hr, and we spend 7.45hr to get ther

nalin [4]

Answer:

Atlanta is at 596.0 km from the house.

Explanation:

The distance between Atlanta and the house can be found using the following equation:

$v = \frac{d}{t}$ (1)

Where:

v: is the speed = 80 km/h

t: is the time = 7.45 h

By solving equation (1) for d and entering the above values we have:

$d = v*t = 80 km/h*7.45 h = 596.0 km = 596000 m$

Therefore, Atlanta is at 596.0 km from the house.

I hope it helps you!

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2 years ago

A rod of length 20 cm has two beads attached to its ends. The rod with beads starts rotating from rest. If the beads are to have

exis [7]

Answer:

$\alpha=28.57\frac{rad}{s^2}$

Explanation:

We use the following rotational kinematic equation to calculate the angular acceleration of the rod:

$\omega_f=\omega_0+\alpha t$

Here $\omega_f$ is the final angular speed, $\omega_0\\$ is the initial angular speed and $\alpha$ is the angular acceleration. The rod starts rotating from rest ( $\omega_0=0$ ):

$\alpha=\frac{\omega_f}{t}(1)$

Recall that the angular speed is defined in function of the tangential speed (v) and the radius (r) of the circular motion:

$w_f=\frac{v_f}{r}(2)$

In this case the radius is given by $r=\frac{20*10^{-2}m}{2}=0.1m$ . Replacing (2) in (1):

$\alpha=\frac{v_f}{rt}\\\alpha=\frac{20\frac{m}{s}}{(0.1m)7s}\\\alpha=28.57\frac{rad}{s^2}$

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2 years ago