I beleive she isnt doing any work due to holding the box motionless, you must be exerting a force in the direction of the box motion. If she is just standing there holding the box their isn't no work becuase no distance has been covered. work = force = distance.
Answer:
The oceanic zone is subdivided into the epipelagic, mesopelagic, and bathypelagic zones on the basis of amount of light that reaches different depths. The mesopelagic (disphotic) zone, where only small amounts of light penetrate, lies below the Epipelagic zone.
Explanation:
θ = angle of the incline surface from the horizontal surface = 25⁰
μ = Coefficient of friction = 0.15
m = mass of the person = 65 kg
= kinetic frictional force acting on the person as he slides down
mg = weight of the person acting in down direction
= normal force by the incline surface on the person
the free body diagram showing the forces acting on the person is given as
Answer:
I only know that acid rain is one of them!! It can erode rocks and weather down
Explanation:
Answer: 1.33 metres
Explanation:
Given that:
Wavelength (λ)= ?
Frequency F = 256Hz
Speed of sound wave = 340 m/s
So, apply the formula:
Wavespeed = frequency x wavelength
i.e V = F λ
340m/s = 256Hz x λ
λ = (340m/s ➗ 256Hz)
λ = 1.328 m (Round to the nearest hundredth which is 1.33 m)
Thus, the wavelength of a sound wave is
1.33 metres
