All categories

3 years ago

Please help do not guess

Physics

1 answer:

Georgia [21]3 years ago

8 0

Answer:

358.9 (+/- 0.4) million years ago

Holocene Epoch, of the Quaternary Period

Devonian period

66 million years ago (prox)

521 million years ago

110,000 years ago

North america became more cold when it moved NW

Explanation:

You might be interested in

An object begins with a speed of 20 meters per second and slows down to a speed of 10 meters per second over a time of 5 seconds

Andreyy89

Answer:

V = 6 m/s

Explanation:

Given that,

Initial speed of an object is 20 m/s

Final speed of an object is 10 m/s

Time, t = 5 s

We need to find the average speed of the object during these 5 seconds. Let it is equal to V. Here, time is same. The average speed is given by :

$V=\dfrac{x+y}{2}\\\\\text{Putting values}\\\\V=\dfrac{20+10}{5}\\\\V=6\ m/s$

So, the average speed of the object is 6 m/s.

3 0

3 years ago

Is clara jogging faster during part A of her run or part C? Explain how you know.

rewona [7]

Clara is jogging faster during part C of her run.

<h3 />

<h3>What is average velocity?</h3>

The average velocity of an object is the change in the object's displacement per change in the time of motion.

From the graph of Clara's motion, the average velocity of Clara in part A is calculated as follows;

$v = \frac{\Delta x}{\Delta t} = \frac{x_2 \ - \ x_1}{t_2 \ - \ t_1} \\\\
v = \frac{800 \ - \ 0}{10 \ - \ 0} \\\\
v = 80 \ m/s$

The average velocity of Clara in part C is calculated as follows;

$v = \frac{1400\ m \ - \ 800 \ m}{25 \ s \ - \ 20 \ s} \\\\
v = \frac{600 \ m}{5 \ s} \\\\
v = 120 \ m/s$

Thus, we can conclude that Clara is jogging faster during part C of her run.

Learn more about average velocity here: brainly.com/question/6504879

3 0

3 years ago

Read 2 more answers

An electric train operates on 800 V. What is its power consumption when the current flowing through the train's motor is 2,130 A

Musya8 [376]

Answer:

Explanation:

To solve for the power consumed by the trains motor we have to employ the formula for power which is

<em>Power= current * voltage</em>

Given that

voltage V= 800 V

current I= 2130 A

Substituting in the formula for power we have

Power= 2130*800= 1704000 watt

Power = 1704 kW

This is the amount of energy consumed, transferred or converted per unit of time

Hence the power consumed by the trains motor is 1704 kW

5 0

3 years ago

Help please <br> hhjshwjsjejjenrhrhfhhfheisiw

DanielleElmas [232]

Answer:

Explanation:

4 0

3 years ago

What is the reaction force of a hammer hitting a nail?

VLD [36.1K]

Newton's 3rd law says that for every force there is an equal and opposite reaction force.
So for the force of the hammer hitting the nail, there is a force equal in magnitude exerted back on the hammer by the nail (and is "opposite" because it's in the other direction and on the hammer.)

6 0

3 years ago