Answer:It would be cut in half
Step-by-step explanation:The momentum of the ball is what speeds it up, like the engine to the car. It needs it to run, so if you cut it in half the speeds are cut in half.
Answer:
30
Step-by-step explanation:
We can find the lcm of 2 3 and 6, which is 30
30/2=15
30/3=10
30/6=5
so, it works!
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Answer:
Quantity of heat needed (Q) = 722.753 × 10³
Step-by-step explanation:
According to question,
Mass of water (m) = 40 kg
Change in temperature ( ΔT) = 18°c
specific heat capacity of water = 4200 j kg^-1 k^-1
The specific heat capacity is the amount of heat required to change the temperature of 1 kg of substance to 1 degree celcius or 1 kelvin .
So, Heat (Q) = m×s×ΔT
Or, Q = 40 kg × 4200 × 18
or, Q = 3024 × 10³ joule
Hence, Quantity of heat needed (Q) = 3024 × 10³ joule
In calories 4.184 joule = 1 calorie
So, 3024 × 10³ joule = 722.753 × 10³
Answer:
8.55x10^5 in scientific notation
