Answer:
Velocity of skater after throwing the snowball is 2.57 m/s
Explanation:
Given :
Mass of skater, M = 62.2 kg
Mass of snowball, m = 0.145 kg
Velocity of snowball relative to ground, v = 39.3 m/s
Consider v₁ be the velocity of skater after throwing the snowball.
According to the problem, initially the velocity of skater and snowball is same. So,
Velocity of skater before throwing snowball, u = 2.66 m/s
Applying conservation of momentum,
Momentum before throwing snowball = Momentum after throwing snowball
(M + m) u = Mv₁ + mv
Substitute the suitable values in the above equation.
v₁ = 2.57 m/s
Answer:
Here is ur answer
Explanation:
The medium-carbon steels have carbon content of 0.30% to 0.60%. They may contain manganese ranging from 0.6% to 1.65%; this makes these types of steel susceptible to hardening during welding.
Answer:
18.65
Explanation:
To solve, divide 1865 by 100
1865/100= 18.65
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I think the answer is B because juice has a higher density than water
Answer:
Explanation:
Formula to calculate the distance between two points 
and 
is,
d = 
Therefore, length of CD having coordinates C(3,1) and D(3, 3),
CD = 
= 2 units
Formula to find the midpoint of CD is,
M = 
= 
= (3, 2)
Therefore, length of CD = 2 units and (3, 2) are the coordinates of the midpoint of CD.
