2 years ago

Help asap I will give brainleast

Physics

1 answer:

NARA [144]2 years ago

5 0

3rd option. Plant D and E did not have enough radiant energy

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A baseball pitcher throws a 0.14 kg ball toward a batter who is 18 m away.

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Answer:

A. 112 J

Explanation:

KE = ½mv² = ½(0.14)40² = 112 J

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3 years ago

A 15kg ball accelerates at a rate of 3m/s/s. What force was required?

hoa [83]

Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 15 × 3

We have the final answer as

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3 years ago

Question 8

spayn [35]

Answer:

500 years so hundreds

Explanation:

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3 years ago

An electroscope is a device that has small gold foil strips suspended from a metal rod. A student brings a negatively charged ro

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I think it is neutral

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3 years ago

Two thin conducting plates, each 56.0 cm on a side, are situated parallel to one another and 7.0 mm apart. If 10^-10 electrons a

dsp73

Answer:

$E=576.5V/m$

Explanation:

From the question we are told that:

Length $l=56.0cm=0.56m$

Distance apart $d=7.0mm=0.007m$

Electron Transferred $n=10^{-10}$

Therefore

Total Charge

Since Charge on each electron is

$e=1.602*10^{-19}$

Therefore

$T=1.602*10^{-19} *10^{10}$

$T=1.602*10^{-9}$

Generally the equation for Charge density is mathematically given by

$\rho=T/A$

Where

Area

$A=0.56*0.56$

$A=0.3136$

Therefore

$\rho=1.602*10^{-9}/0.3136$

$\rho=5.10*10^{-9}$

Generally the equation for Electric Field in the capacitor is mathematically given by

$E=\frac{\rho}{e_0}$

$E=\frac{5.10*10^{-9}}{8.85x10{-12}}$

$E=576.5V/m$

8 0

2 years ago