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castortr0y [4]
3 years ago
15

Multiply the following numbers, using scientific notation and the correct amount of significant digits. 1.003 m⋅3.09 = _____ 3.0

99 m 3.10 m 3.0993 m 3.1 m
Physics
2 answers:
Misha Larkins [42]3 years ago
6 0

Answer:

3.10 m

Explanation:

When we multiply or divide there is a rule for significant digits given below:

“The answer will be rounded off to the shortest number of significant digits among the numbers which are being multiplied or divided”.  

When we multiply 1.003 m and 3.10, we get 3.1093 m. But we have round it off according to the rule up to 3 significant digits because one of the numbers has 3 significant digits. Hence, answer will be 3.10m.  

lozanna [386]3 years ago
3 0

Answer

correct answer is 3.10

Explanation:

in this question we have to multiply  two numbers 1.003 and 3.09.

1.003 has 4 significant digits and 3.09 has 3 significant digits so answer must have 3 significant digits.

1.003\times 3.09=3.09927

1.003\times 3.09=3.10              


Hope it will help you

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3. Discuss the main purpose of Experiment" Explain the greatest advantage of experiment in psychology?
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3 years ago
A 1250 kg car, driving 7.39 m/s, runs into the back of a stationary 5380 kg truck. After the collision, the truck moves forward
Leno4ka [110]

Explanation:

Given that,

Mass of the car, m₁ = 1250 kg

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Let v₁ is the final velocity of the car. Using the conservation of momentum as :

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3 0
3 years ago
A 1.20 kg water balloon will break if it experiences more than 530 N of force. Your 'friend' whips the water balloon toward you
soldi70 [24.7K]

Answer:

t = 0.029s

Explanation:

In order to calculate the interaction time at the moment of catching the ball, you take into account that the force exerted on an object is also given by the change, on time, of its linear momentum:

F=\frac{\Delta p}{\Delta t}=m\frac{\Delta v}{\Delta t}       (1)

m: mass of the water balloon = 1.20kg

Δv: change in the speed of the balloon = v2 - v1

v2: final speed = 0m/s (the balloon stops in my hands)

v1: initial speed = 13.0m/s

Δt: interaction time = ?

The water balloon brakes if the force is more than 530N. You solve the equation (1) for Δt and replace the values of the other parameters:

|F|=|530N|= |m\frac{v_2-v_1}{\Delta t}|\\\\|530N|=| (1.20kg)\frac{0m/s-13.0m/s}{\Delta t}|\\\\\Delta t=0.029s

The interaction time to avoid that the water balloon breaks is 0.029s

5 0
3 years ago
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