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3 years ago

6

You are driving your car at a speed of 60 miles per hour, when you cross into Canada. Canada measures their speed in kilometers

per hour, and you need to figure out how fast you are going!

1 answer:

Flauer [41]3 years ago

8 0

Answer:

Answer:

I don't know

Explanation:

I don't know

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Answer:

I don't know

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I don't know

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Allison wants to determine the density of a bouncing ball. which metric measurements must she use?

lubasha [3.4K]

Density depends on mass and volume so option D is correct answer. Hope this helps!

3 0

3 years ago

The law of conservation of momentum states that the total momentum of interacting objects does not _____. This means the total m

drek231 [11]

Answer:

The law of conservation of momentum states that the total momentum of interacting objects does not <u>change</u>. This means the total momentum <u>before</u><u> </u>a collision or explosion is equal to the total momentum <u>after</u><u> </u>a collision or explosion.

6 0

3 years ago

Read 2 more answers

What is the total energy of a particle with a rest mass of 1 gram moving with half the speed of light? 1 eV = 1.6 x 10^-19 J. An

GREYUIT [131]

Answer:

6.5 x 10^32 eV

Explanation:

mass of particle, mo = 1 g = 0.001 kg

velocity of particle, v = half of velocity of light = c / 2

c = 3 x 10^8 m/s

Energy associated to the particle

E = γ mo c^2

$E=\frac{m_{0}c^}2}{\sqrt{1-\frac{v^{2}}{c^{2}}}}$

$E=\frac{m_{0}c^}2}{\sqrt{1-\frac{c^{2}}{4c^{2}}}}$

$E=\frac{2m_{0}c^}2}{\sqrt{3}}$

$E=\frac{2\times0.001\times9\times10^{16}}{1.732}$

$E=1.04\times10^{14}J$

Convert Joule into eV

1 eV = 1.6 x 10^-19 J

So, $E=\frac{1.04\times10^{14}}{1.6\times10^{-19}}=6.5\times10^{32}eV$

4 0

2 years ago

How many laws does newton have?

liq [111]

Newton has 3 Laws specifically The Three Laws of Motion

3 0

3 years ago

The concepts in this problem are similar to those in Multiple-Concept Example 4, except that the force doing the work in this pr

steposvetlana [31]

Answer:

Explanation:

Given that:

distance (z) = 7.86 m

mass of the person = 81.7 kg

Acceleration (a) = 0.729 m/s²

By using Newton's second law along the vertical axis:

$T - mg = ma\\ \\ T = ma + mg \\ \\ T = m(a+g) \\ \\$

T = 81.7 (0.729 +9.8)

T = 860.22 N

The work done now is:

$W_T = T\times z \\ \\$

$W_T = 860.22 \times 7.86$

$\mathbf{W_T =6761.3292\ N}$

5 0

3 years ago