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olga2289 [7]
3 years ago
14

The temperature of a 5.0 kg block increases by 3 degrees C when 2,000 J of thermal energy are added to the block. What is the sp

ecific heat of the block? _____________
Physics
1 answer:
AlexFokin [52]3 years ago
4 0
Sorry bro I just need points for my calculus exam
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2) Calculate the gravitational potential energy that a parachutist has just as he
masya89 [10]

Answer:

<em>The gravitational potential energy of the parachutist is 3,528,000 J</em>

Explanation:

<u>Gravitational Potential Energy </u>

It's the energy stored in an object because of its height in a gravitational field.

It can be calculated with the equation:

U=m.g.h

Where:

m = mass of the object

h  = height with respect to a fixed reference

g  = acceleration of gravity, usually taken as 9.8 m/s^2.

The parachutist has a mass of m=120 kg and he jumps at a height of h= 3,000 m. Computing the gravitational potential energy:

U = 120 * 3,000 * 9.8

U = 3,528,000 J

The gravitational potential energy of the parachutist is 3,528,000 J

5 0
3 years ago
The order in which atomic orbitals are filled is based on what factor?. . A- The potential energy of the orbital.. . B- The high
Gnoma [55]
The order in which atomic orbitals by electrons are filled is based on the Aufbau principle which states that orbitals are filled in increasing energy level. The answer that applies here is C. The overall energy level of the orbital. 
8 0
3 years ago
Amy uses 20 N of force to push a lawnmower 10 meters. How much work does she do?
Ira Lisetskai [31]

Answer:

200J

Explanation:

work done = force x distance

                  = 20 x 10

                  = 200J

8 0
2 years ago
1. Which one of the following physical quantities is formed after dividing<br>mass by volume?​
aivan3 [116]

Answer:

xxxxx

Explanation:

Density is the mass of an object divided by its volume. Density often has units of grams per cubic centimeter (g/cm3). Remember, grams is a mass and cubic centimeters is a Volume (the same volume as 1 milliliter).

3 0
2 years ago
A train travels north at a speed of 50 m/s.
Gala2k [10]

The apparent velocity is B) 48 m/s north

Explanation:

Here we have a problem of relativity of velocities.

In fact, the train is travelling north at a speed of

v_t = 50 m/s

where this velocity is measured with respect to the ground.

At the same time, a passenger on the train is walking towards the rear (so, south) at a velocity of

v'=2 m/s

where this velocity is measured with respect to the train, which is in motion in the opposite direction.

Therefore, the apparent velocity of the passenger with respect to an observer standing on the ground is:

v=V_t - v' = 50 - 2 = 48 m/s

And the direction is north, since this number is positive.

Learn more about velocity:

brainly.com/question/5248528

#LearnwithBrainly

8 0
3 years ago
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