Answer:newtons second law
Explanation:
To get something to accelerate you have to apply a pull force . if the mass increase a grater pull is required
The voltage as a function of time for the power source oscillating at the given frequency is determined as V = 169.7sin(120πt).
<h3>
Peak voltage</h3>
The peak voltage of the source is calculated as follows;
Vrms = 0.7071V₀
120 = 0.7071V₀
V₀ = 120/0.7071
V₀ = 169.7 V
<h3>Angular frequency of the wave</h3>
ω = 2πf
where;
f is frequency = 60 Hz
ω = 2π x 60
ω = 120π rad/s
<h3>Voltage equation as function of time</h3>
V = V₀sin(ωt)
V = 169.7sin(120πt)
Learn more about peak voltage here: brainly.com/question/6249123
Answer:
3/7 ω
Explanation:
Initial momentum = final momentum
I(-ω) + (2I)(3ω) + (4I)(-ω/2) = (I + 2I + 4I) ωnet
-Iω + 6Iω - 2Iω = 7I ωnet
3Iω = 7I ωnet
ωnet = 3/7 ω
The final angular velocity will be 3/7 ω counterclockwise.
Answer:
Her average speed was 40 km/h.
Explanation:
Hi there!
The average speed (a.s) is calculated as the traveled distance divided by the time it took to cover that distance:
a.s = d/t
Where:
d = traveled distance.
t = time.
In this case, the odometer reading of the car increased by 12.0 km, which means that the distance traveled is 12.0 km. The time it took the student to cover that distance is 18.0 min (18.0 min · 1 h/60 min = 0.3 h) . Then the average speed will be:
a.s = d/t
a.s = 12.0 km/ 0.3 h
a.s = 40 km/h
Her average speed was 40 km/h.
Answer:
The speed doubles.
Explanation:
The speed of a wave in a string is:
v = √(T / ρ)
where T is the tension and ρ is the linear density (mass per length).
If T is held constant, and ρ decreases by 1/4, then:
v = √(T / (ρ/4))
v = √(4T / ρ)
v = 2√(T / ρ)
The speed doubles.