Answer:
Earth's gravity would increase with the increase in Earth's mass. The driver hits a bump and the gravell falls out, so that the mass of the truck is one half as large after hitting the bump.
Explanation:
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Answer:
v = 315 m/s
Explanation:
given,
length of the string = 64.3 cm
frequency at fundamental mode = 245 Hz
speed of sound = 345 m/s
speed of the transverse waves = ?
here
wavelength = twice length of string
λ = 2 L
λ = 2 × 64.3
λ = 128.6 cm = 1.286 m
using formula
v = ν λ
v = 245 × 1.286
v = 315.07 m/s
Hence, the speed of the transverse wave on the string will be equal to v = 315 m/s
Answer:
a
When peter held the book for one minute the rate at which motor unites are fired increase steeply but as the duration increases the increese in the rate at which it is being fired becomes linear so the number of activated motors stay the same but are being activated at a more rapidly
b
The same motors are activated whilest he is hold the book for 2 minutes this is because for peter to hold the book in one fixed position one specific motor units need to be activated
Note changing the motor unites would change the positon of the hand
Explanation:
Answer: Rods
Explanation:
The rod cells in the retina are the reason we are able to see at night and in dim light. They exist on the edges of the retina which is why they are also very useful for the peripheral vision of a human.
Rod cells number over 90 million in the eyes and although very useful for seeing in dimmer light, they are not very useful for color vision which is why humans see less colors in the dark.
