Refer to the diagram shown below.
Let the truck be traveling north at 20 m/s.
Let the ball be shot eastward at 20 m/s
The resultant velocity of the ball is
v = √(20² + 20²) = 20√2 = 28.284 m/s
The direction is
θ = tan⁻¹ (20/20) = tan⁻¹ 1 = 45°
Answer:
The ball travels at 28.3 m/s at 45° relative to the direction of the truck.
Answer:
well bricks are heavy so yeah i guess so if you have a ton of them dropped on you lol
Explanation:
Answer:
the theoretical maximum energy in kWh that can be recovered during this interval is 0.136 kWh
Explanation:
Given that;
weight of vehicle = 4000 lbs
we know that 1 kg = 2.20462
so
m = 4000 / 2.20462 = 1814.37 kg
Initial velocity 
= 60 mph = 26.8224 m/s
Final velocity 
= 30 mph = 13.4112 m/s
now we determine change in kinetic energy
Δk = 
m( ² - ² )
we substitute
Δk = ×1814.37( (26.8224)² - (13.4112)² )
Δk = × 1814.37 × 539.5808
Δk = 489500 Joules
we know that; 1 kilowatt hour = 3.6 × 10⁶ Joule
so
Δk = 489500 / 3.6 × 10⁶
Δk = 0.13597 ≈ 0.136 kWh
Therefore, the theoretical maximum energy in kWh that can be recovered during this interval is 0.136 kWh
The light particle<span> conceived by Einstein is called a photon. The main point of his </span>light<span> quantum theory is the idea that </span>light's energy is related to its oscillation frequency. <span>Einstein believed </span>light<span> is a </span>particle<span> (photon) and the flow of photons is a </span>wave<span>.</span>
Answer:
Plane spacing, 
Explanation:
It is given that,
Wavelength of x-ray, 
Angle the x-ray made with a set of planes in a crystal causing first order constructive interference is 30 degrees
We need to find the plane spacing. It is based on Bragg's law such that,
d is plane spacing
n = 1 here
So, the plane spacing is 
.
