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balandron [24]
4 years ago
10

He sees a mouse sniffing along at 0.2 m/s but it hears and starts to scurry for safety. In just 4.7 s it speeds up to 1.6 m/s. F

ind its acceleration.
Physics
1 answer:
NISA [10]4 years ago
8 0

Answer:

0.30 m/s²

Explanation:

Given:

v₀ = 0.2 m/s

v = 1.6 m/s

t = 4.7 s

Find: a

a = (v − v₀) / t

a = (1.6 m/s − 0.2 m/s) / 4.7 s

a = 0.30 m/s²

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Calculate the work done when: <br><br> The resultant force on a car is 22kN and it travels 2.0km.
RoseWind [281]
W=Fd
W=22,000N*(2,000m)
W=44,000,000J
6 0
3 years ago
Read 2 more answers
What is the electric force acting between two charges of 0.0072 C and -0.0060 C that are 0.0040 m apart?
telo118 [61]
Answer:
F = -2.4 * 10¹⁰ N

Explanation:
To get the electric force between two charges, we would use Coulomb's law which states that:
F = \frac{k * q1 * q2}{d^{2} }

where:
F is the force between the two charges
k is Coulomb's constant = 9 * 10⁹ Nm²/C²
q1 is the first charge = 0.0072 C
q2 is the second charge = -0.006 C
d is the distance between the two charges = 0.004 m

Substitute with the givens in the above formula to get the force between the two charges as follows:
F = \frac{9*10^9*0.0072*-0.006}{(0.004)^2}

F = -2.4 * 10¹⁰ N

Hope this helps :)
8 0
3 years ago
A baseball has mass 0.145 kg.
Vesnalui [34]

Answer:

a).p=15.67kg*m/s

b). F=7.83N

Explanation:

change in momentum is the subtraction from "after momentum" of the "before momentum"  as momentum is a vector quantity this is a vector subtraction.

initial momentum of ball

m1v1 = (0.145)(44.0) = 6.38 kg-m/s

after momentum

m1v2 = (0.145)(64.0) = 9.28 kg-m/s

since these momentums are 180° opposite one must be called negative so their difference

6.38+9.28= 15.67 kg-m/s

change in momentum = 15.67 kg-m/s ANS a1

Impulse = change in momenutm = 15.67 ANS a2

b)

Impulse =Favg*t

I=(2.00)Favg

Impulse from (a2) = 15.67  

Favg = 15.67/2.00 =

F= 7.83 N

3 0
4 years ago
Maryam is driving her car when she glances at the temperature displayed on her dashboard. It says that the temperature is curren
Gre4nikov [31]

Answer: Maryam is driving her car when she glances at the temperature displayed on her dashboard. It says that the temperature is currently 78 degrees outside. This temperature is called a Sensation.

Explanation: To find the answer, we need to know more about the Sensation, perception and psychophysics.

<h3>What is sensation, perception and psychophysics?</h3>
  • Sensation can be defined as the process by which the physical energy from objects in the world stimulates the sense organs.
  • The process in which the brain interprets and organizes this sense of information is called, Perception.
  • The branch of physics that deals with the study of how physical properties of stimuli connected with the people's experience of stimuli is called the Psychophysics.

Thus, we can conclude that, the process of sensation happens here.

Learn more about the Sensation, perception and psychophysics here:

brainly.com/question/28044944

#SPJ4

3 0
2 years ago
To which layer can geologists apply the principle of faunal succession to determine the age of the layer?
BigorU [14]
A. Layer C is the right answer out of all the choices
5 0
4 years ago
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