Potential energy is stored an object , where as kinetic energy is energy in a object during movement . Potential energy is what kinetic energy transfers into
6.6 miles I think hope this is the right answer.
Answer: 510 m/s
Explanation: specific gravity of steam is 18/29 = 0.620
It is the ratio of the density of steam over density of water
400m3/s of steam =
400m3ms * 0.620 of water
= 248m3/s of water
Total flow rate Q = 248 + 7 = 255m3/s
Using Q = AV
Where A is area and V is velocity
V = Q/A
V = 255/0.5 = 510m/s
Answer:
Yes
Explanation:
The spring force is given as:
F = kd
F is the spring force
K is the spring constant
d is the magnitude of the stretch
Since k is a constant, therefore, doubling the stretch distance will double the force.
Both stretch distance and force applied can be said to be directly proportional to one another.
Answer:
Fk = 21.645N
Explanation:
Let Fb be Force of block and thus;
Fb= mg where m is mass of block and g is acceleration due to gravity
Thus Fb= 9kg x 9.81N/kg = 88.29 N
Now, the question says this force Fb rests at an inclined plane [email protected] 30° angle
Thus;
Force parallel to inclined plane = 88.29 x sin30° = 44.145 N.
Force perpendicular to the inclined plane = 88.29 x cos30 = 76.46 N
Now, when an object is falling freely, we know that
h = (1/2)at^(2)
From the question, the height is 5m and t= 2 seconds
Thus;
5 = (1/2)a(2)^(2)
2a = 5 and thus,
a = 5/2 = 2.5 m/s^(2)
Now, in inclined planes, perpendicular force - kinetic friction force = Resultant force
Thus let perpendicular be Fp and kinetic friction force be Fk and so;
Fp - Fk = F
F= ma = 9 x 2.5 = 22.5N
Thus, 44.145 - Fk = 22.5
Thus, Fk = 44.145 - 22.5 = 21.645N
