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2 years ago

Eric drops a 2.20 kg water balloon that falls a distance of 45.08 m off the top of a

Physics

1 answer:

Marianna [84]2 years ago

4 0

Answer:

972 J

Explanation:

At the bottom, all the gravitational potential energy was converted into kinetic energy. If you calculate the GPE, its value will be the same that the KE at the bottom. The GPE can be calculated this way:

GPE = mass×gravity×heigth

GPE = 2.2×9.8×45.08 ≈ 972

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¿Cuál de las siguientes magnitudes es derivada?

Sedaia [141]

Answer:

A. El volumen

B. La densidad.

Explanation:

A derived quantity is defined as one that has to be calculated by using two or more other measurements.

Volume is a derived quantity because it requires one to use different measurements to determine it. For instance, in the case of a cube, the length, width and height of the cube are all needed to calculate volume.

Density is also a derived quantity because it needs both volume and mass for it to be calculated.

8 0

3 years ago

When operated on a household 110.0 V line, typical hair dryers draw about 1450 W of power. The current can be modeled as a long,

dezoksy [38]

Answer:

0.075A

Explanation:

We can consider this system as a circuit, hence we can take the current from the formula for the electric power as follow

$P=IV\\I=\frac{P}{V}=\frac{110V}{1450W}=0.075A$

I hope this is useful for you

regards

4 0

2 years ago

A small ferryboat is 3.90 m wide and 6.30 m long. when a loaded truck pulls onto it, the boat sinks an additional 5.00 cm into t

Leya [2.2K]

When the truck's weight is added to the boat, the boat sinks 5 cm deeper,
and displaces additional water whose weight is equal to the weight of the
truck.

The volume of the additional displaced water is

(3.9 m) x (6.3 m) x (5.0 cm)

= (3.9 m) x (6.3 m) x (0.05 m) = 1.2285 m³ .

The weight of that much water is the weight of the truck.

Mass of 1 liter of water = 1 kilogram

1.2285 m³ = 1,228.5 liters = 1,228.5 kg of water.

Weight = (mass) x (gravity)

= (1,228.5 kg) x (9.8 m/s²) = 12,039 Newtons.

(about 2,708 pounds)

6 0

3 years ago

Students are going to conduct an experiment to study the effect of a net force applied to an object on the object’s motion. In e

Ronch [10]

Answer:

A. velocity and time

Explanation:

A force can be define as an agent which has the capacity to change the state of an object. It can either increase the velocity of a body, change its direction of motion or cause a moving object to come to rest.

From Newton's second law of motion;

F = ma

where F is the force on the object, m is the mass of the object and a is the acceleration of the object. The unit of force is kgm/ $s^{2}$ or Newtons.

a = $\frac{change in velocity}{change in time}$

In the given question, apart from the mass of the object which is constant, the students should take the measurements of the velocity and time in each trial so as to calculate the required acceleration.

7 0

2 years ago

Read 2 more answers

Calculate the average speed of a snake that moves 700 meters in 5 hours?

ddd [48]

140 ? i’m guessing there doesn’t look like there’s much to the question

7 0

3 years ago

Read 2 more answers