Ask question

Ask question

All categories

BabaBlast [244]

2 years ago

5

Someone, please help me!!!! no stupid comments please!

1 answer:

natta225 [31]2 years ago

4 0

Answer:

1) d 2) a 3)

Explanation:

4) B would be brighter and more useful than A because A is all bunched up together without any room for extra energy meanwhile B has plenty of room for more energy

You might be interested in

_______ measures an object's change in position per unit time.

Deffense [45]

I believe your answer should be C. Speed.

6 0

3 years ago

Read 2 more answers

Pls help me with this

OLEGan [10]

Answer:

I can't see it because it's too blury. try to search it

7 0

3 years ago

Tubby and his twin brother Libby have a combined mass of 200 kg and are zooming along in a 100 kg amusement park bumper car at 1

harkovskaia [24]

Answer: 14.1 m/s

Explanation:

We can solve this with the Conservation of Linear Momentum principle, which states the initial momentum $p_{i}$ (before the elastic collision) must be equal to the final momentum $p_{f}$ (after the elastic collision):

$p_{i}=p_{f}$ (1)

Being:

$p_{i}=m_{1}V_{i} + m_{2}U_{i}$

$p_{f}=m_{1}V_{f} + m_{2}U_{f}$

Where:

$m_{1}=200 kg +100 kg=300 kg$ is the combined mass of Tubby and Libby with the car

$V_{i}=10 m/s$ is the velocity of Tubby and Libby with the car before the collision

$m_{2}=25 kg + 100 kg=125 kg$ is the combined mass of Flubby with its car

$U_{i}=0 m/s$ is the velocity of Flubby with the car before the collision

$V_{f}=4.12 m/s$ is the velocity of Tubby and Libby with the car after the collision

$U_{f}$ is the velocity of Flubby with the car after the collision

So, we have the following:

$m_{1}V_{i} + m_{2}U_{i}=m_{1}V_{f} + m_{2}U_{f}$ (2)

Finding $U_{f}$ :

$U_{f}=\frac{m_{1}(V_{i}-V_{f})}{m_{2}}$ (3)

$U_{f}=\frac{300 kg(10 m/s-4.12 m/s)}{125 kg}$ (4)

Finally:

$U_{f}=14.1 m/s$

8 0

3 years ago

How do muscles help the body move?

Finger [1]

Answer:

Hello

A. The muscle contracts causing the tendon to pull the bone.

3 0

3 years ago

Read 2 more answers

How many valence electrons are in this atom?

stealth61 [152]

There are 7 0r 8

Explanation: max atoms you can have are 8 but there is not an 8 in this question so either or

8 0

3 years ago