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Oksi-84 [34.3K]
3 years ago
5

1

Physics
1 answer:
Darya [45]3 years ago
3 0
  • Mass=0.25kg
  • Force=95N

\\ \bull\sf\dashrightarrow F=ma

\\ \bull\sf\dashrightarrow a=\dfrac{F}{m}

\\ \bull\sf\dashrightarrow a=\dfrac{95}{0.25}

\\ \bull\sf\dashrightarrow a=380m/s^2

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Physics 5
Darina [25.2K]

Answer:

0.85 A

Explanation:

the effective current is 0.85 A

6 0
2 years ago
Richard is driving home to visit his parents. 150 mi of the trip are on the interstate highway where the speed limit is 65 mph .
Serggg [28]

Answer:

t = 25.5 min

Explanation:

To know how many minutes does Richard save, you first calculate the time that Richard takes with both velocities v1 = 65mph and v2 = 80mph.

t_1=\frac{x}{v_1}=\frac{150mi}{65mph}=2.30h\\\\t_2=\frac{x}{v_2}=\frac{150mi}{80mph}=1.875h

Next, you calculate the difference between both times t1 and t2:

\Delta t=t_1-t_2=2.30h-1.875h=0.425h

This is the time that Richard saves when he drives with a speed of 80mph. Finally, you convert the result to minutes:

0.425h*\frac{60min}{1h}=25.5min=25\ min\ \ 30 s

hence, Richard saves 25.5 min (25 min and 30 s) when he drives with a speed of 80mph

3 0
3 years ago
What is the correct definition of electrical energy?
kvv77 [185]
Electric energy<span> is the </span>energy<span> created by electrons moving through an </span>electrical<span> conductor. </span><span>When electrons are forced down a conductive path, such as a wire, the movement produces electricity, or </span>electric energy<span>. Plz mark as best answer.</span>
3 0
4 years ago
An electron is released from rest in a uniform electric field. The electron accelerates vertically upward, traveling 4.5 meters
dem82 [27]

Answer:

The electric and magnetic field are 6.34 N/C and 2.11\times10^{-8}\ T.

Explanation:

Given that,

Distance = 4.5 m

Time = 2.84 μs

We need to calculate the acceleration

Using equation of motion

The distance covered by the electron is

s=ut+\dfrac{1}{2}at^2

When, the electron at rest

s = \dfrac{1}{2}at^2

Where, s = distance

a = acceleration

t = time

Put the value into the formula

4.5=\dfrac{1}{2}\times a\times(2.84\times10^{-6})^2

a=\dfrac{2\times4.5}{(2.84\times10^{-6})^2}

a=1.116\times10^{12}\ m/s^2

We need to calculate the electric field

Using formula of the electric field

E=\dfrac{F}{q}

E=\dfrac{ma}{q}

Put the value into the formula

E=\dfrac{9.1\times10^{-31}\times1.116\times10^{12}}{1.6\times10^{-19}}

E=6.34\ N/C

We need to calculate the magnetic field

Using formula of magnetic field

B = \dfrac{E}{c}

Put the value into the formula

B=\dfrac{6.34}{3\times10^{8}}

B=2.11\times10^{-8}\ T

According to the right hand rule,

The direction of magnetic field is outward because the direction of force is upward.

Hence, The electric and magnetic field are 6.34 N/C and 2.11\times10^{-8}\ T.

8 0
3 years ago
The half-life of Uranium is longer on Earth than the half-life of Uranium on the moon. True or False?
Nina [5.8K]
That's false.  The half-life of an unstable element
doesn't depend on its environment.
8 0
4 years ago
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