(1) The vertical magnitude of the ball's initial velocity is 16.075 m/s,
(2) The maximum height of the ball is 13.18 m
(1) To Calculate the vertical component of the ball's initial velocity, we use the formula below.
Formula:
- Vy = Vsin∅........................ Equation 1
Where:
- Vy = vertical component of the ball's initial velocity
- V = Initial velocity of the ball
- ∅ = angle to the horizontal.
From the question,
Given:
Substitute these values into equation 1
- Vy = 25(sin40°)
- Vy = 25×0.643
- Vy = 16.075 m/s.
(2) To calculate the maximum height reached by the ball, we use the formula below.
Formula:
- H = (Vy)²/2g............... Equation 2
Where:
- g = Acceleration due to gravity = 9.8 m/s²
Substitute the value above into equation 2
- H = (16.075)²/(2×9.8)
- H = 13.18 m
Hence, (1) The vertical magnitude of the ball's initial velocity is 16.075 m/s, (b) The maximum height of the ball is 13.18 m.
Learn more about maximum height here: brainly.com/question/13665920
Average speed = total distance travelled / total time taken
total distance = 3 + 2.5 + 7 + 10 + 2 = 24.5
total time = 120 seconds
therefore 24.5/120 is
0.2m per second.
Answer:
a. I = 30 A
b. E = 1080000 J = 1080 KJ
c. ΔT = 12.86°C
d. Cost = $ 4.32
Explanation:
a.
The current in the coil is given by Ohm's Law:
where,
I = current = ?
V = Voltage = 120 V
R = Resistance = 4 Ω
Therefore,
<u>I = 30 A</u>
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b.
The energy can be calculated as:
<u>E = 1080000 J = 1080 KJ</u>
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c.
For the increase in the temperature of water:
where,
m = mass of water = 20 kg
C = specific heat of water = 4.2 KJ/kg.°C
Therefore,
<u>ΔT = 12.86°C</u>
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d.
First, we will calculate the total energy consumed:
Now, for the cost:
<u>Cost = $ 4.32</u>
Answer:
it would be 12/A
Explanation:
if you dived 5 by 12 youll get 60 and you cant get 60 y anything else in there so therefor its 12 :)
Answer:
Answer is = 12.3 x 10^6 N
Explanation:
We need to calculate force on the charge which is in Newtons:
Formula is = K q1q2/r^2
k is constant depeneds on the permitivity of the medium and its value is 9x10^9 Nm^2/C^2
q1 and q2 are charges and r is the distance between these two charges so just by putting values we get F= 9x10^9 x 1.1x10^-6/(8x10^-2)^2 (we get the above answer in newton)
