Solo estoy aquí por la libra, lo siento, no pude ayudar
The x component of the force on an incline plane is m*g*cos(theta) and the y component is mg*sin(theta). The normal force or x component, keeps the object in contact with the plane, and the y component of the force is so we can solve speed, acceleration, distance travelled, etc for the object using conservation of energy.
Hope this helps. Any questions please just ask. Thank you.
Use the formula for kinetic energy.
KE=1/2mv^2
KE=1/2*(82kg)*(2.8m/s)^2
KE=321.4 J
The answer is C
The rest of it is used up as unwanted energy or wasted energy in forms of:
.heat
.noise
Answer:
Wavelength = 3.74 m
Explanation:
In order to find wavelength in "metres", we must first convert megahertz to hertz.
1 MHz = 1 × 10⁶ Hz
80.3 Mhz = <em>x</em>
<em>x </em>= 80.3 × 1 × 10⁶ = 8.03 × 10⁷ Hz
The formula between wave speed, frequency and wavelength is:
v = fλ [where v is wave speed, f is frequency and λ is wavelength]
Reorganise the equation and make λ the subject.
λ = v ÷ f
λ = (3 × 10⁸) ÷ (8.03 × 10⁷)
λ = 3.74 m [rounded to 3 significant figures]