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Kruka [31]
3 years ago
5

An object falls from a high building and hits the ground in 7.0 seconds. Ignoring air resistance, what is the distance that it f

ell?
Physics
1 answer:
Rama09 [41]3 years ago
7 0

Explanation:

Δy = v₀ t + ½ at²

Δy = (0 m/s) (7.0 s) + ½ (-9.8 m/s²)(7.0s)²

= -34.3

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As more energy from fossil fuels and other fuels is released on Earth, the overall temperature of Earth tends to rise. Discuss h
BlackZzzverrR [31]

Answer:

processes are competitive and reach a thermal equilibrium where the absorbed energy is equal to the energy emitted, this is the equilibrium temperature of the planet.

Explanation:

The temperature of planet Earth is due to two main types of process, internal and external.

Internal processes are all chemical processes that occur that release heat into the environment or due to gases that trap heat on the planet, greenhouse effect

External processes is heating due to energy coming from the Sun. This includes direct heating of the surface by the absorption of energy and reflects of energy in different atmospheric layers.

These are the two terms that heat the Earth

In addition there are several processes so the planet loses energy,

* energy radiation to outer space that is a few degrees kelvin, for which there is a permanent emission

* endothermic processes that need to absorb heat to perform, this lowers the temperature of the system

* liquid (water) system that absorbs large amounts of heat to change state and temperature.

These processes are competitive and reach a thermal equilibrium where the absorbed energy is equal to the energy emitted, this is the equilibrium temperature of the planet.

Therefore it is impossible for the temperature to increase indefinitely since the emission would increase by decreasing the value

5 0
3 years ago
How are eras and periods of the geologic time scale named?
Natalka [10]

Answer:

mark me brainliest plz

Explanation:

In the early 1800's a system for naming geologic time periods was devised using four periods of geologic time. They were named using Latin root words, Primary, Secondary, Tertiary and Quaternary. ... Keep in mind that this chart is focused on geologic time periods. There are also geologic Eons, Eras, and epochs.

3 0
3 years ago
Read 2 more answers
300N effort is applied to lift the load of 900N by using a first class lever. If the distance between the load and fulcrum is 20
Klio2033 [76]

Answer:

Effort=300N

Load=900N

Load distance=20m

Now,

Ed=(L*Ld)/E

Ed=(900*20)/300

Ed=1800/300

Ed=6m

Explanation:

7 0
2 years ago
Read 2 more answers
When the sun provides energy for photosynthesis, an interaction with the __________ takes place.
geniusboy [140]
Answer: chloroplast

Explanation:
The chloroplast are organelles that conduct photosynthesis, where the photosynthetic pigment chlorophyll captures the energy from sunlight
7 0
3 years ago
A spring with a spring constant of k = 185.0 N / m is oriented vertically, with one end on the ground. What distance does the sp
uysha [10]

Answer:

The distance spring compresses (x) = 0.0811 m

Explanation:

Spring constant (k) = 185 N / m

mass (m) = 1.53 kg

When mass is placed upon the spring the spring force is equal to weight of the mass.

⇒ Spring force (F) = weight of object

⇒  Spring force (F) = k × x

 And weight of the object = mg

⇒ k x =  mg -----------------(1)

Put all the values in equation (1) we get

⇒ 185 × x = 1.53 × 9.81

⇒ x = 0.0811 m

This the distance spring compresses, when mass is placed upon it.

8 0
3 years ago
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