The terminal speed of the marble is 0.588 m/s.
Given:
We know that,
F = mg ......(1)
where,
F = force
m = mass
g = acceleration due to gravity
Also,
v = F/k ......(2)
where,
v = terminal speed
k = proportionality constant
Substituting the value of F from equation (1) in equation (2)
v = mg/k .......(3)
Given,
m = 30 g = 0.030 kg
k = 0.500 kg/s
g = 9.8 m/s²
To find,
v =?
Put the values in equation (3)
v = mg/k
v = 0.03(9.8)/ 0.500
= 0.294/0.500
= 0.588 m/s
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Answer:
A
Explanation:
The endocrine system has all of the body's hormones it regulates the biological processes. For example it can help brain development, nervous system development, and it can regulate blood sugar. (This is the closest to A)
Answer:
Explanation:
First displacement of the particle is given as
= 11 m at 82 degree with positive X axis
so we can say
resultant displacement of the particle after second displacement is given as
r = 8.7 m at 135 degree with positive X axis
so we can say
now we know that
now we have
so we will have
so angle of the second displacement is given as
Answer:
Displacement from Sacramento to Los Angeles is 384.9 miles
Total path length is given as 769.8 miles
Displacement of complete round trip is ZERO
Explanation:
As we know that the displacement is the change in the position from initial to final in a straight line
Here we know that the car travel from Sacramento to Los Angeles
So the straight line distance between two is the displacement
so we have
displacement = 384.9 miles
Now we know that he returns from Los Angeles to Sacramento by same path
So total distance moved by it is same as total path length
d = 384.9 + 384.9
d = 769.8 miles
Also we know that initial and final positions are same so displacement is ZERO for complete round trip.
Answer: Gravity
Explanation: Gravity is pulling down on the ball, making it stay on the floor
