Th normal reaction between the television and the table is
N = (8 kg)(9.8 m/s²) = 78.4 N
The static coefficient of friction is μ = 0.48.
When the television is about to slide on the table, the applied force should overcome the force due to static friction.
The applied force should be at least
F = μN
= 0.48*78.4
= 37.632 N
Answer: 37.6 N (nearest tenth)
Answer: the speedometer indicates the speed of a vehicle.
Answer:
T = 61.06 °C
Explanation:
given data:
a thin metal bar consist of 5 different material.
thermal conductivity of ---
K {steel} = 16 Wm^{-1} k^{-1}
K brass = 125 Wm^{-1} k^{-1}
K copper = 401 Wm^{-1} k^{-1}
K aluminium =30Wm^{-1} k^{-1}
K silver = 427 Wm^{-1} k^{-1}
WE KNOW THAT
total resistance of bar = R steel + R brass + R copper + R aluminium + R silver
let T is the temperature at steel/brass interference
will be constant throughtout the bar
therefore we have
solving for T we get
T = 61.06 °C
I had this question already I still have my answer the answer is D is the correct answer.
Answer:
Refractive index, n = 2.419
Explanation:
It is given that,
Speed of light in the medium,
Speed of light in the vacuum,
Let n is the index of refraction for a medium. We know that the refractive index for any medium is equal to the ratio of speed of light in vacuum to the speed of light in medium. It can be written as :
n = 2.419
So, the index of refraction for a medium is 2.419. Hence, this is the required solution.