What is the current in a 160V circuit if the resistance is 2Ω? V= I= R=

Help pls, see picture. Will mark Brainliest

Pani-rosa [81]

Answer:

a ) option 2 is correct

b) -ve acceleration for upward motion ,0 acceleration at top point ,+ve acceleration on downward motion ...

Explanation:

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5 0

2 years ago

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An attack helicopter is equipped with a 20- mm cannon that fires 88.7 g shells in the forward direction with a muzzle speed of 9

Svetradugi [14.3K]

The impulse imparted to the shells equals the change in the momentum:
Fav*(Delta t)= Delta m*v.
The mass change is
Delta m= n*m= (89.9shells)*(88.7g)=7.97Kg
So the average force is
F=((v)*(Delta m))/t= ((929)*(7.97))/4.84=1529.78 N
Since the velocity of the shells is much greater than the velocity of the helicopter, there is no need to use relative velocity.

4 0

2 years ago

1) A car is traveling down the interstate at 37.1 m/s. The driver sees a cop and quickly slows down. If the driver slows to 29.8

dlinn [17]

Explanation:

1. Acceleration is the change in velocity over time.

a = Δv / Δt

a = (29.8 m/s − 37.1 m/s) / 3 s

a = -2.43 m/s²

2. Work equals force times distance.

W = Fd

W = (87.3 N) (2.04 m)

W = 178 J

3. Power is work per time.

P = W / t

267 W = 1250 J / t

t = 4.68 s

3 0

2 years ago

As the also increase. _applied to a circuit increases, the power and the current

polet [3.4K]

As the voltage applied to a crcuit increases, the power dissipated by the circuit, and the current flowing through the circuit, both also increase.

3 0

3 years ago

A boy weighs 400N. what is his mass?

Basile [38]

≈40.8kg

this is to take up space

m

=

W

g

=

400

N

9.8

m/s

2

≈

40.8

kg

m

=

W

g

=

400

N

9.8

m/s

2

≈

40.8

kg

m

=

W

g

=

400

N

9.8

m/s

2

≈

40.8

kg

m

=

W

g

=

400

N

9.8

m/s

2

≈

40.8

kg

m

=

W

g

=

400

N

9.8

m/s

2

≈

40.8

kg

m

=

W

g

=

400

N

9.8

m/s

2

≈

40.8

kg

m

=

W

g

=

400

N

9.8

m/s

2

≈

40.8

kg

m

=

W

g

=

400

N

9.8

m/s

2

≈

40.8

kg

m

=

W

g

=

400

N

9.8

m/s

2

≈

40.8

kg

m

=

W

g

=

400

N

9.8

m/s

2

≈

40.8

kg

4 0

3 years ago

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