All categories

3 years ago

I know it's supposed to be an easy question but I'm dumb

Physics

1 answer:

frozen [14]3 years ago

4 0

Answer: A

Explanation:

Object 2:

Mass: 6kg

Height: 3m

Acceleration due to gravity: 9.8 $m/s^2$

The formula is $E_{p} =mgh$ Where;

$E_p}$ = Gravitational potential energy

m = mass

g = acceleration due to gravity

h = height

Replace the variables for their values.

$E_p = (6kg)(9.8m/s^2)(3m)$

Multiply

$E_p = 176.4 kg*m^2/s^2\\or\\E_p = 176.4 J$

You might be interested in

A certain nuclear power plant is capable of producing 1.2×10^9 W of electric power. During operation of the reactor, mass is con

alukav5142 [94]

Answer:

0.00016 kg

Explanation:

Given:

Power = P = 1.2 × 10⁹ Watts

Power = work done / Time

efficiency = 0.30

Input power = 1.2 × 10⁹ / 0.30 = 4 × 10⁹ W

Energy = 4 × 10⁹ x 60 x 60 = 1.44 x 10¹³ joules

E = m c² , where c is the speed of light and m is the mass.

⇒ mass = m = E / c² = (1.44 x 10¹³) / (3 × 10⁸ )²

= 0.00016 kg

6 0

4 years ago

Tina wants to install one unit that both heats and cools. Which should Tina install?

madreJ [45]

A heat pump? it might be furnace but i think its heat pump

8 0

3 years ago

Read 2 more answers

Instrument used to measure capacity

Andre45 [30]

Answer:

measuring cup

The most popular tool used to measure capacity is the measuring cup.

6 0

3 years ago

Read 2 more answers

If a roller coaster train has a potential energy of 1,500 J and a kinetic energy of 500 J as it starts to travel downhill, its t

Lina20 [59]

$E_{total} = KE + PE \\ KE = 500 J \\ PE = 1500 J \\ E_{total} = 500J + 1500J \\ E_{total} = 2000J$

4 0

4 years ago

Read 2 more answers

What's the frequency of a wave with a wavelength of 10 and velocity of 200m/s?

uranmaximum [27]

Answer:

$\boxed {\boxed {\sf 20 \ Hz}}$

Explanation:

The frequency of a wave can be found using the following formula.

$f=\frac{v}{\lambda}$

where f is the frequency, v is the velocity/wave speed, and λ is the wavelength.

The wavelength is 10 meters and the velocity is 200 meters per second.

1 m/s can also be written as 1 m*s^-1

Therefore:

$v= 200 \ m*s^{-1} \\\lambda = 10 \ m$

Substitute the values into the formula.

$f=\frac{200 \ m*s^{-1}}{10 \ m}$

Divide and note that the meters (m) will cancel each other out.

$f=\frac{200 \ s^{-1}}{10 \ }$

$f=20 \ s^{-1}$

1 s^-1 is equal to Hertz
Therefore, our answer of 20 s^-1 is equal to 20 Hz

$f= 20 \ Hz$

The frequency of the wave is 20 Hertz

7 0

3 years ago

I know it's supposed to be an easy question but I'm dumb​

I know it's supposed to be an easy question but I'm dumb