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3 years ago

I will mark you brainlist!

Physics

1 answer:

kirill115 [55]3 years ago

7 0

Tornado- Trees knocked down, debris everywhere, ground and dirt scattered.

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The magnitude of a vector can be different in different coordinate systems. The magnitude of a vector can be different in differ

Georgia [21]

Answer:

False.

Explanation:

We usually define vectors in terms of its magnitude and their orientation. Magnitude and direction does not vary with the change of a coordinate system as they are independent of coordinates and will remain the same. So it does not matter what your choice of a coordinate system is, it will not effect its direction and magnitude. However you can resolve the vector in to its components if you want.

4 0

3 years ago

Clearly distinguish between mass, weight, and volume.

USPshnik [31]

The mass tells you the amount of matter or substance that makes up an object.

The weight tells you the measure of the matter.

The volume tells you the amount of space/size taken up

6 0

4 years ago

If at 10m above the ground an object has 50J of Kinetic Energy, with 50J of Potential Energy. How high can the object travel?

steposvetlana [31]

Hi there!

$\large\boxed{\text{B) 20 meters}}$

We know that:

$E_T = U + K$

U = Potential Energy (J)

K = Kinetic Energy (J)

E = Total Energy (J)

At 10m, the total amount of energy is equivalent to:

U + K = 50 + 50 = 100 J

To find the highest point the object can travel, K = 0 J and U is at a maximum of 100 J, so:

100J = mgh

We know at 10m U = 50J, so we can solve for mass. Let g = 10 m/s².

50J = 10(10)m

m = 1/2 kg

Now, solve for height given that E = 100 J:

100J = 1/2(10)h

100J = 5h

<u>h = 20 meters</u>

3 0

3 years ago

An inductive circuit contains resistance of 20 ohm and an inductance of 20 H. If an ac voltage of 120 V and frequency 60 Hz is a

elena-s [515]

Answer:

answer : option (b) 0.016 amp

explanation : resistance of resistor , R = 10 Ω

inductance of inductor , X_LX

= 20H

voltage of AC circuit , V = 120volts

frequency, ff =60Hz

so, angular frequency, \omega=2\pi fω=2πf = 2 × π × 60 = 120π rad/s

now, current , i=\frac{V}{\sqrt{R^2+\omega^2L^2}}i=

+ω

= 120/√{10² + (120π)² × 20²}

= 120/√{100 + 14400π² × 400}

after solving this we get, i = 0.016 amp

8 0

3 years ago

At 25 mph, it will take you about how many feet to stop your car?

sp2606 [1]

It will take approximately 8 - 10 feet.

7 0

3 years ago