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Rainbow [258]
3 years ago
14

What is the answer need this for tomorrow

Physics
1 answer:
8_murik_8 [283]3 years ago
7 0
I believe that the answer is chemical energy.
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PLEASE HELP!!!!!!!!!!
FinnZ [79.3K]

Answer:

ax = 4.01

Explanation:

6 0
3 years ago
A positive charge of 6.0 x 10-4 C is in an electric field that exerts a force of 4.5 x 10 -4 on it. What is the strength of the
Yuki888 [10]

Electric field is defined as force per unit charge.

So it is given by

F = q E

now we can find electric field by

E = \frac{F}{q}

E = \frac{4.5*10^{-4}}{6 * 10^{-4}}

E = 0.75 N/C

So field strength is 0.75 N/C.

6 0
3 years ago
Which event in a solar cell uses the photoelectric effect?
Helen [10]

Explanation:

Photovoltaic energy is a clean, renewable source of energy that uses solar radiation to produce electricity. It is based on the photoelectric effect—the emission of electrons when electromagnetic radiation (i.e. light) hits a material.

8 0
2 years ago
Read 2 more answers
While standing on a bridge 15 m above the ground, you drop a stone from rest. When the stone has fallen 3.2 m, you throw a secon
AURORKA [14]

Answer:

11.3 m/s

Explanation:

First, find the time it takes for the first stone to fall 3.2 m.

Given:

Δy = 3.2 m

v₀ = 0 m/s

a = 9.8 m/s²

Find: t

Δy = v₀ t + ½ at²

(3.2 m) = (0 m/s) t + ½ (9.8 m/s²) t²

t = 0.81 s

Next, find the time for the first stone to land.

Given:

Δy = 15 m

v₀ = 0 m/s

a = 9.8 m/s²

Find: t

Δy = v₀ t + ½ at²

(15 m) = (0 m/s) t + ½ (9.8 m/s²) t²

t = 1.75 s

The difference in time is 1.75 s − 0.81 s = 0.94 s.  Find the initial velocity needed for the second stone to land after that amount of time.

Given:

Δy = 15 m

a = 9.8 m/s²

t = 0.94 s

Find: v₀

Δy = v₀ t + ½ at²

(15 m) = v₀ (0.94 s) + ½ (9.8 m/s²) (0.94 s)²

v₀ = 11.3 m/s

5 0
3 years ago
a resistance of 30 ohms is placed in a circuit with 90 volt battery what current flow in the circuit​
mamaluj [8]

Answer:

3amps

Explanation:

voltage v = current I × resistance R

current = voltage÷ resistance = 90÷30= 3amperes

4 0
3 years ago
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