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algol13
2 years ago
13

Three chairs were rolling across a flat office floor. The blue and red chairs are the same mass, and they have more mass than th

e yellow chair. Each chair was hit by another chair, but not from the same direction. Use the information in the diagram to answer.
Which chair(s) experienced the strongest force when hit? How do you know?


a
The blue and red chairs experienced the strongest force because they are both more massive than the yellow chair and they changed speed by the same amount.

b
The red chair experienced the strongest force because it is as massive as the blue chair and has the highest ending speed.

c
All three chairs experienced the same force because they changed speed by the same amount.

d
The blue chair experienced the strongest force because it takes more force to slow an object than it takes to make it go faster.

Physics
2 answers:
Scilla [17]2 years ago
5 0
The answer is the second one of it that
tatuchka [14]2 years ago
3 0

Answer:

a) The blue and red chairs experienced the strongest force because they are both more massive than the yellow chair and they changed speed by the same amount.

Explanation:

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A typical adult human has a mass of about 70 kg.
Misha Larkins [42]
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
a. <span>FM GmMmr2
</span>= 6.67 x 10-11N.m2kg27 .35 x 1022 kg 70 kg 3.78 x 108 m2 
<span>= 2.40 x 10-3 N

b. </span><span>FE GmEmr2
= 6.67 x 10-11 N.m2kg 25 .97 x 1034 kg (70kg) 6.38 x 106 m2
=685 N 
FMFE 2.40 x 10-3N685 N= 0.0004%</span>
3 0
2 years ago
Two vectors are presented as a=3.0i +5.0j and b=2.0i+4.0j find (a) a x b, ab (c) (a+b)b and (d) the component of a along the dir
Svet_ta [14]
Let's ask this question step by step:
 Part A) 
 a x b = (3.0i + 5.0j) x (2.0i + 4.0j) = (12-10) k = 2k
 ab = (3.0i + 5.0j). (2.0i + 4.0j) = 6 + 20 = 26
 Part (c)
 (a + b) b = [(3.0i + 5.0j) + (2.0i + 4.0j)]. (2.0i + 4.0j)
 (a + b) b = (5.0i + 9.0j). (2.0i + 4.0j)
 (a + b) b = 10 + 36
 (a + b) b = 46
 Part (d)
 comp (ba) = (a.b) / lbl
 a.b = (3.0i + 5.0j). (2.0i + 4.0j) = 6 + 20 = 26
 lbl = root ((2.0) ^ 2 + (4.0) ^ 2) = root (20)
 comp (ba) = 26 / root (20)
 answer
 2k
 26
 46
 26 / root (20)
3 0
2 years ago
Q13. An electric bulb draws a current of 0.8A and works on 250V on the average 8 hours a day, if energy costs Rs 3 per kWh. Calc
olga_2 [115]
Using p=v * i
p=250 * 0.8=200w = 0.2kw
power consumed in a day=0.2 *8=1.6 kwh
for one month=1.6 * 30 =48kwh
monthly bills= 48 *3 = Rs 144
7 0
2 years ago
Determine the values of m and n when the following mass of the Earth is written in scientific notation: 5,970,000,000,000,000,00
uysha [10]

Answer: 5.97, 24

m = 5.97

n = 24

SN = 5.97 × 10^24 kg

Explanation:

Scientific notation or standard form is a way of rewriting very large or very small (minute) numbers in conveniently in decimal form. The standard way of writing scientific notation is of the form;

m × 10^n

To derive m, we need to reduce it to a number between 1 and 10 ( 10 exclusive)

For the case above ;

m = 5.97

To get the value of n, we need to count the number of digits from the right egde of the data to the point where we put the decimal.

For the case above;

n = 24

Therefore, the scientific notation of the mass of the earth is ;

M = 5.97 × 10^24 kg

7 0
2 years ago
Car 1 goes around a level curve at a constant speed of 65 km/h . The curve is a circular arc with a radius of 95 m . Car 2 goes
Arte-miy333 [17]

Answer:

The radius of the curve that Car 2 travels on is 380 meters.

Explanation:

Speed of car 1, v_1=65\ km/h

Radius of the circular arc, r_1=95\ m

Car 2 has twice the speed of Car 1, v_2=130\ km/h

We need to find the radius of the curve that Car 2 travels on have to be in order for both cars to have the same centripetal acceleration. We know that the centripetal acceleration is given by :

a=\dfrac{v^2}{r}

According to given condition,

\dfrac{v_1^2}{r_1}=\dfrac{v_2^2}{r_2}

\dfrac{65^2}{95}=\dfrac{130^2}{r_2}

On solving we get :

r_2=380\ m

So, the radius of the curve that Car 2 travels on is 380 meters. Hence, this is the required solution.

4 0
2 years ago
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