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mixas84 [53]
3 years ago
15

Please help I'm taking a timed test!

Physics
2 answers:
SCORPION-xisa [38]3 years ago
8 0
B. A small rubber ball bouncing near a little girl
xenn [34]3 years ago
8 0

Answer:

B  ......a small rubber ball bouncing near a little girl

Explanation:

All the other answers  arent a type of energy change they aint moving sooo where is the energy  change ...... Nowhere .

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Why does the balloon stick to the wall
ryzh [129]

Answer:Magic

Explanation:

You know its true.

5 0
4 years ago
Read 2 more answers
What is the momentum of a baseball with a mass of 4 kg being thrown at a velocity of 84 m/s towards the hitter
Delvig [45]

Answer:

<h3>The answer is 336 kgm/s</h3>

Explanation:

The momentum of an object can be found by using the formula

<h3>momentum = mass × velocity</h3>

From the question

mass = 4 kg

velocity = 84 m/s

We have

momentum = 4 × 84

We have the final answer as

<h3>336 kgm/s</h3>

Hope this helps you

7 0
3 years ago
Read 2 more answers
A car traveling at 31 m/s starts to decelerate steadily. It comes to a complete stop in 7 seconds. What is its acceleration
N76 [4]
Vf=V1+at
0=31+a(7)
-31/7=a
a=-4.43m/s^2

Hope this helps.
8 0
3 years ago
A heavy piece of hanging sculpture is suspended by a 90 cm-long, 5.0 g steel wire. When the wind blows hard, the wire hums at it
kupik [55]

Answer: The mass of the sculpture is 11.8kg

Explanation:

Using the equation of fundamental frequency of a taut string.

f = (1/2L)*√(T/μ) .... (Eqn1)

Where

f= frequency in Hertz =80Hz

T = Tension in the string = Mg

M represent the mass of the substance (sculpture) =?

g= 9.8m/s^2

L= Length of the string=90cm=0.9m

μ= mass density = mass of string /Length of string

mass of string =5g=0.005kg

L=0.9m

μ=0.005/0.9 = 0.0056kg/m

Using (Eqn1)

80= 1/(2*0.9) √(T/0.0056)

144= √(T/0.0056)

Square both sides

20736= T/0.0056

T= 116.12N

Recall that T =Mg

116.12= M * 9.8

M=116.12/9.8

M= 11.8kg

Therefore the mass of the sculpture is 11.8kg

4 0
3 years ago
Please help me!!! ASAP 10 points for first to answer.
strojnjashka [21]
See the image above :)

7 0
3 years ago
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