Can you help please !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

The force of gravity is twice as great on a 2-kg rock as on a 1-kg rock. Why then, dose the 2-kg rock not fall with twice the ac

Phoenix [80]

Answer:

because all objects fall at a rate of 9.8m/s²

8 0

2 years ago

What is an example of convection currents? a. marshmallows toasting over a campfire b. a pot being heated by an electric burner,

SCORPION-xisa [38]

Answer:

B

Explanation:

because, convection is the transfer of heat between fluid substances/materials

7 0

2 years ago

Read 2 more answers

I’m sorry this is a quiz and we’re correcting it and I still don’t get it anyone know ?

kotegsom [21]

Answer:

3.0M

Explanation:

Thats two wavelengths,not one.

Pretty honest mistake I would've made the same if I was rushing

5 0

2 years ago

A wheel on a car is rolling without slipping along level ground. The speed of the car is 36 m/s. The wheel has an outer diameter

lutik1710 [3]

Answer:

The speed of the top of the wheel is twice the speed of the car.

That is: 72 m/s

Explanation:

To find the speed of the top of the wheel, we need to combine to velocities: the tangential velocity of the rotating wheel due to rotational motion $(v_t=\omega\,R=\omega\,(0.25\,m)\,)$ - with $\omega$ being the wheel's angular velocity,

plus the velocity due to the translation of the center of mass (v = 36 m/s).

The wheel's angular velocity (in radians per second) can be obtained using the tangential velocity for the pure rotational motion and it equals: $\omega=\frac{v_t}{r} =\frac{36}{0.25} \,s^{-1}$

Then the addition of these two velocities equals:

$\omega\,R+v=\frac{36}{0.25} (0.25)\,\,\frac{m}{s} +36\,\,\frac{m}{s} =72\,\,\frac{m}{s}$

7 0

3 years ago

Describe about simple cell. with well label diagram.

dedylja [7]

A simple electric has two terminals i.e. negative and positive, And it has a top and a bottom namely Metal Cap and Metal disc.

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<h3>Description of each part :-</h3>

Metal cap:- The part which is above the positive terminal, a cap of metal through which the positively charged electrons are passed.
Metal disc:- The part which is below the negative terminal, a disc of metal through which the negatively charged electrons are passed.
Positive terminal:- In a circuit the current flows from positive terminal to negative terminal.
These terminals are also known as cathode and anode.
Cathode is the other name for positive terminal and anode is the other name for negative terminal.

8 0

1 year ago