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jasenka [17]
2 years ago
14

A car goes from point A to point B, five miles away and then returns to point A. The car is going 15 mph.

Physics
1 answer:
Sergeeva-Olga [200]2 years ago
3 0

the velocity would be 0 mph

The answer is B.

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Why do metals make good electrical conductors?
alexdok [17]

Answer:

Explained

Explanation:

Metals are good conductors of electricity because they contain free electrons in their atoms. The outer shell of atom's of metal have free electrons. These free electrons are responsible of electrical conductivity of metals. These electron are not bounded by the attraction forces of the nucleous. They are free to wonder in lattice of positive ion and thus allow electrical conductivity.

3 0
2 years ago
As you may well know, placing metal objects inside a microwave oven can generate sparks. Two of your friends are arguing over th
poizon [28]

Answer:

4.048\times 10^{-7}\ m

Explanation:

h = Planck's constant = 6.626\times 10^{-34}\ m^2kg/s

c = Speed of light = 3\times 10^8\ m/s

E = Energy = 4.91\times 10^{-19}\ J

Wavelength ejected is given by

\lambda=\dfrac{hc}{E}\\\Rightarrow \lambda=\dfrac{6.626\times 10^{-34}\times 3\times 10^8}{4.91\times 10^{-19}}\\\Rightarrow \lambda=4.048\times 10^{-7}\ m

The maximum wavelength in angstroms of the radiation that will eject electrons from the metal is 4.048\times 10^{-7}\ m

4 0
3 years ago
Is the Force balanced or unbalanced?
Alexus [3.1K]

Answer:

1. balanced

2. unbalanced

3. balanced

4. balanced

5. unbalanced

6. unbalanced

7. unbalanced

8. balanced

9. unbalanced

10. unbalanced

11. unbalanced

12. balanced

3 0
2 years ago
When climbing a steep hill, would you want a larger or smaller bicycle gear?
DochEvi [55]

Answer:

Usually when climbing, it's best to be in the small front ring and the largest back ring. If your cadence is about 100 rpm, then whatever gear you're in is fine. It depends on the road, but as long as your pedaling is at a level you're comfortable with, you're fine.

Explanation:

Google answer by the way.

3 0
2 years ago
A motorcycle is travelling north at 11m/s. How much time would it take for the motorcycle to increase its velocity to 26m/s (N)
DaniilM [7]
Using the kinematic equation,
v = u + at
26 = 11 + 3t
15 = 3t
t = 5 seconds.
Time required is 5 seconds.
8 0
3 years ago
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