Kinetic Energy is calculated by KE= 1/2mv2
Answer:
B. Ball B will take longer to complete one cycle
Explanation:
This is simply because the period of a simple pendulum is affected by acceleration due to gravity, while the period of an ideal spring is not.
This can be clearly deduced by observing the formulas for the various systems.
Formula for period of simple pendulum:
T = 2π ×
Formula for period of an oscillating spring:
T= 2π ×
The period of the simple pendulum is affected by the length of the string and the acceleration due to gravity as shown above. Thus, it will have a different period as the gravitational acceleration changes on the moon. Thus will be a larger period <em>(slower oscillation) </em>as the gravitational acceleration is smaller in this case
The period of the oscillating spring is only affected by the mass of the load an the spring constant as shown above. Thus, it will have a period similar to the one it had on the earth because the mass of the ball did not change as the setup was taken to the moon.
All these will make the ball on the spring (Ball B) oscillate faster than the ball swinging on the string (Ball A)
Answer:
Explanation:
usually electricity is sold in the units of kWh, which I will ASSUME is the case here.
85 W (1 kW/1000W)(1hr)(10 p) = 0.85p
60 W (1 kW/1000W)(1hr)(10 p) = <u>0.60p</u>
together they would cost 1.45 p
which would be rounded down to 1 p
Maybe the answer is workaholic but I am not 100 % sure
Answer:
The answer to your question is given below
Explanation:
The procedure to prepare a 1.0-liter solution of a specific molarity is as follow:
Step 1:
Determine mass of the solute needed. In this case it is 30g as given from the question.
Step 2:
Weigh the 30g from the sample of the solute using a weighing balance.
Step 3:
Put the 30g of the solute in a 500mL beaker, add adequate water and stir until it dissolves completely.
Step 4:
Transfer this solution from the 500mL to a 1L volumetric flask and make it up to the mark.