Answer:
wA - T =mA(a)
second option
Explanation:
get step by step full answer from trusted experts
just join this wats up group
scan QR
post question
get step by step answer instantly
get good grade in exam
Answer:
Explanation:
Given that,
The blade of a windshield wiper moves through an angle of 90.0° in 0.397 s
The radius of the circlular path is 0.376 m
We need to find the magnitude of the centripetal acceleration of the tip of the blade. Let it is a. The formula of the centripetal acceleration is given by :
v is velocity,
It moves through an angle of 90 degrees, it means
So,
So, the magnitude of the centripetal acceleration of the tip of the blade is .
Answer:
19.3 m/s
Explanation:
Take down to be positive. Given:
Δy = 19 m
v₀ = 0 m/s
a = 9.8 m/s²
Find: v
v² = v₀² + 2aΔy
v² = (0 m/s)² + 2 (9.8 m/s²) (19 m)
v = 19.3 m/s
Answer:
Explanation:
Energy of system of charges
= k q₁q₂ / r₁₂ + k q₁q₃ / r₁₃ + k q₃q₂ / r₃₂
q₁ , q₂ and q₃ are charges and r₁₂ , r₁₃ , r₃₂ are densities between them
9 x 10⁹ ( 2x2 x10⁻¹²/ .25 + 2x2 x10⁻¹²/ .25 + 2x2 x10⁻¹²/ .25 )
= 9 x 10⁹ x 3 x 16 x 10⁻¹²
= 432 x 10⁻³
= .432 J .
Answer:
Explanation:
Hope that this is helpful.
Have a great day.