Answer:
Explanation:
At the top , horizontal displacement = 2 m .
vertical displacement = 1.5 m .
Let time to reach the hole be t . Let the ball is launched at angle θ with horizontal with velocity u .
ucosθ x t = 2
from v = u - 2gt
0 = usinθ - 2gt
usinθ = 2gt
v² = u² - 2gh
u²sin²θ = 2 g h
u²sin²θ = 2 x 9.8 x 1.5
usinθ = 5.42
usinθ = 2gt
2gt = 5.42
t = .2765 s
ucosθ x t = 2
ucosθ x .2765 = 2
ucosθ = 7.23
usinθ = 5.42
dividing ,
Tanθ = .75
θ = 37°
usin37 = 5.42
u = 9.03 m /s
For this problem, let's use the approach of dimensional analysis. This technique is done by cancelling out like units that appear both on the numerator and the denominator side. As a result, this technique will let you know that your final answer conforms to what parameter is asked. In this case, the final answer should be in kJ. We use the conversion: 1000 cal = 4.184 kJ The solution is as follows:
<span>6.95×10</span>⁵<span> cal * 4.184 kJ/1000 cal = 2,907.88 kJ</span>
Answer:
c. both have same energy
Explanation:
The complete question is
suppose you have two cans, one with milk, and the other with refried beans. The cans have essentially the same size, shape, and mass. If you release both cans at the same time, on a downhill ramp, which can has more energy at the bottom of the ramp? ignore friction and air resistance..
a. can with beans
b. can with milk
c. both have same energy
please explain your answer
Since both cans have the same size, shape, and mass, and they are released at the same height above the ramp, they'll possess the same amount of mechanical energy. This is because their mechanical energy, which is the combination of their potential and kinetic energy are both dependent on their mass. Also, having the same physical quantities like their size and shape means that they will experience the same environmental or physical factors, which will be balanced for both.
Had to look for the options and here is my answer. What happens when the fluid discharge of an air-operated reciprocating pump is shut, this will cause the pump to OVERSTROKE. Overstroke happens when the engine is switching in a normally-closed manner.
