The change in the kinetic energy of the monster truck during the time is 507500 J and the right option is B). 507500
<h3>What is kinetic energy?</h3>
Kinetic energy is the energy of a body due to its motion.
To calculate the increase in the kinetic energy of the monster truck, we use the formula below.
Formula:
- ΔK.E = m(v²-u²)/2............. Equation 1
Where:
- ΔK.E = Increase in kinetic energy of the monster truck
- m = mass of the monster truck
- v = final velocity of the monster truck
- u = initial velocity of the monster truck.
From the question,
Given:
- m = 5000 kg
- v = 18 m/s
- u = 11 m/s.
Substitute these values into equation 1
- ΔK.E = 5000(18²-11²)/2
- ΔK.E = 2500(324-121)
- ΔK.E = 2500(203
- ΔK.E = 507500 J
Hence, The increase in the kinetic energy of the monster truck during the time is 507500 J and the right option is B). 507500.
Learn more about kinetic energy here: brainly.com/question/25959744
Answer:
Result magnetic field=
Explanation:
We are given:
r = 160m
Let us say the lightning bolt is a long straight conductor.
Therefore we will use the formula:
B = Uo•I / 2πr
Substituting figures in the equation, we have:
![B = [(4π*10^-^7 T•m/A)(1.00*10^4)] / (2π * 160)](https://tex.z-dn.net/?f=%20B%20%3D%20%5B%284%CF%80%2A10%5E-%5E7%20T%E2%80%A2m%2FA%29%281.00%2A10%5E4%29%5D%20%2F%20%282%CF%80%20%2A%20160%29%20)
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Answer:
56.7 m³
Explanation:
The radius of the circular area covered by the spill is 4.25 km
You can find the area covered by the spill by applying the formula for area of a circular surface
A=π×r² where π=3.14 and r=4.25km
A= 3.14×4.25² = 56.72 km²
Remember the total area is on average at 1 micron (1μm) thick.This is to say
1μm=1m³
So the minimum volume of oil covering the ocean surface in meters will be;
Change km² to m²
56.72 km²= 56.72×1000000=5.67×10⁷ m²
Finding the volume;
Volume = Area * thickness
Volume= 5.67×10⁷ m² * 1× 10⁻⁶ = 56.7 m³
Minimum amount of oil that was spilled is 56.7 m³
Answer:
b
Explanation:
When an object is in circular motion, the direction of velocity is in the direction of tangent to the circle and acceleration is always directed towards the radial direction. This means that velocity is always perpendicular to acceleration of the object.
Hence option (b)-The velocity and acceleration vectors are perpendicular is correct.
Answer:
323 m/s²
Explanation:
Given:
x₀ = 0 m
y₀ = 0 m
x = 29500 cos 65°
y = 29500 sin 65°
v₀x = 1810 cos 20°
v₀y = 1810 sin 20°
t = 9.20
Find:
ax, ay, θ
First, in the x direction:
x = x₀ + v₀ t + ½ at²
29500 cos 32° = 0 + (1810 cos 20°) (9.20) + ½ ax (9.20)²
25017 = 15648 + 42.32 ax
ax ≈ 221.4
And in the y direction:
y = y₀ + v₀ t + ½ at²
29500 sin 32° = 0 + (1810 sin 20°) (9.20) + ½ ay (9.20)²
15633 = 5695 + 42.32 ay
ay ≈ 234.8
Therefore, the magnitude of the acceleration is:
a² = ax² + ay²
a² = (221.4)² + (234.8)²
a ≈ 322.7
Rounded to 3 significant figures, the magnitude of the acceleration is approximately 323 m/s².
