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Olenka [21]
3 years ago
10

If you are looking for a material that is a good conductor, you will look for a material that will

Physics
2 answers:
Vedmedyk [2.9K]3 years ago
6 0
You will look for a material that will allow heat energy to move freely among particles; materials like copper or aluminum.
schepotkina [342]3 years ago
3 0
A material with lots of free electrons. 
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Two water balloons of mass 0.35 kg collide and bounce off of each other
sladkih [1.3K]

Answer:

Option D

2 m/s East

Explanation:

From the law of conservation of momentum, the sum of initial momentum equals the sum of final momentum

Momentum, p=mv where m is the mass and v is the velocity

Since the masses are the same then

m(u_1+u_2)=m(v_1+v_2)  

Therefore

u_1+u_2=v_1+v_2

where v_1 and v_2 are final velocities of objects while u_1 and u_2 are the initial velocities respectively

Taking East direction as positive then West as negative and by substitution

2.5+-2.25=v_1-1.75

Therefore

v_1=2 m/s hence East since it's positive

6 0
3 years ago
1. A car accelerates uniformly from 12 m/s to 39 m/s in 12 seconds. What is the car's average acceleration
Alinara [238K]

Answer:

(1) 2.25m/s^2

(2) 45.6m

Explanation:

(1) A car accelerates uniformly from 12m/s to 39m/s in 12 seconds

Therefore the average acceleration can be calculated as follows

a = 39-12/12

a = 27/12

a= 2.25m/s^2

(2) A butterfly is flying at 4m/s , it accelerates uniformly at 1.2 m/s for 6 seconds

u= 4

a= 1.2

t= 6

Therefore the distance can be calculated as follows

S= ut + 1/2at^2

= 4×6 + 1/2 × 1.2 × 6^2

= 24 + 1/2 × 1.2 × 36

= 24 + 1/2 × 43.2

= 24 + 21.6

S = 45.6m

Hence the butterfly travels at 45.6m

5 0
3 years ago
Amy put some salt in a weighing dish. Then she put the weighing dish on a sensitive balance to measure the mass of the salt. She
tatyana61 [14]

Answer:

Explanation:

i. Accuracy in measurement is a term that is used to describe the closeness of a measured value to its actual value. It relates the actual value to the measured values.

Therefore in the given question, Amy's measurement of the salt's mass is accurate because her final value is close to all the measured values.

ii. Precision in measurement is a term that is used to describe the closeness of different measured values to each other. It relates the keenness in the measured values.

Thus, Amy's measurements of the salt's mass is precise because the values of the masses are close to one another.

8 0
3 years ago
Ixchelt burns her tongue when she takes a sip of hot coffee from her mug. Which part of this example represents heat?
bekas [8.4K]

Answer:

Explanation:

"The thermal energy moving from her coffee to the tongue" represent the heat.

Here coffee is at high temperature while tongue is at low temperature, when Ixchelt tongue make contact with coffee then thermal energy of coffee is absorbed by tongue and tongue gets burned.

As heat always from high Potential to low that is why heat is absorbed by tongue.

6 0
3 years ago
Read 2 more answers
A force of attraction that exists between any two objects is ______
larisa86 [58]
I believe the answer would be A, gravity.
6 0
4 years ago
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