Answer:
I believe the answer is B) Two wavelengths
Answer:Frequency = 3.525 Hertz
Explanation:In static equilibrium, kd =mg
Where k= effective spring constant of the spring.
mg= The weight of the car.
d= static deflection.
Therefore, w =SQRTg/d
w = SQRT 9.81/0.02
w= 22.15 rad/sec
Converting to Hertz unit for frequency
1 rad/s = 0.1591
22.15rad/s=?
22.15 × 0.1591= 3.525 hertz
15) C. The amount of each element that begins....
Answer:
Explanation:
Given that,
Current, I = 2 A
Voltage across the resistor, V = 18 V
We need to find the value of resistance of the resistor. Let the resistance be R. We can find it using Ohm's law i.e.
V = IR
Where
R is the resistance of the resistor
So, the resistance of the resistor is equal to 
.
Answer: 45000kgm/s
Explanation:
Given that:
Mass of speed boat = 1500 kg
Velocity of speedboat = 30 m/s
Speed boats Momentum = ?
The Speed boat momentum is the product of its mass and the velocity by which it moves. Momentum is a vector quantity and measured in kgm/s
i.e Momentum = mass x velocity
= 1500 kg x 30 m/s
= 45000kgm/s
Thus, the speed boats momentum is 45000kgm/s
