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USPshnik [31]
3 years ago
7

9. If the frequency of a certain light is 3.8 x 10 Hz, what is the energy of this light?

Physics
1 answer:
ddd [48]3 years ago
8 0

Answer:

E = h*f = (6.63*10^-34) *( 3.8*10)

E = 2.5 *10^-32

Explanation:

e= Energy

h = Planck's constant

f = frequency

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Nadusha1986 [10]

Answer: 420 km

Explanation:

120 per hour, 3.5 hours

120 x 3.5 = 420

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3 years ago
Holden is trying to determine the velocity of his race car. He went 20 meters east, turned around, and went 40 meters west. His
Ludmilka [50]

Answer:

12 m/s west

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4 0
3 years ago
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While on an ice-fishing trip, you find yourself holding a 10 kg fish but stuck in the middle of
Anna007 [38]

The forward force you exert on the fish and your backward action will allow you to reach the shore.

<h3>Newton's third law of motion</h3>

Newton's third law of motion states that for every action, there is an equal and opposite reaction.

Fa = -Fb

Let's assume the fish is held in the hook, this will give you the opportunity to throw the fish forward while still holding it.

When the the fish is thrown forward, you will move backwards with an equal force based on Newton's third law. Your backward momentum towards the shore will help to maintain equal linear momentum between you and the fish.

Thus, this forward force of the fish and your backward action will allow you to reach the shore.

Learn more Newton's third law of motion here: brainly.com/question/25998091

3 0
3 years ago
Use the terms "force", "weight", "mass", and "inertia" to explain why it is easier to tackle a 220 lb football player than a 288
Tomtit [17]
<span><u>Answer </u>
The mass of 220 lb football has less than 288 lb football. So, it will be easier to move it since it will require less force. The heavy football will have a bigger momentum. Since 288 lb has more weight than 220 lb, it will have bigger inertia making it difficult for the players to stop it.
This makes it easier to tackle 220 lb football than 288 lb football. 
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7 0
4 years ago
Read 2 more answers
I’d really appreciate it if someone could help
Vanyuwa [196]

Answer:

0.25

Explanation:

Friction force is the normal force times the coefficient of friction.

F = Nμ

50 N = (200 N) μ

μ = 0.25

6 0
3 years ago
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