A child slides down a hill on a toboggan with acceleration of 1.8 m/s2. if she starts from rest, how far has she traveled in: 2 seconds
Answer:
2.4 m
Explanation:
From the question above,
Applying equation of motion,
s = ut+at²/2....................... Equation 1
Where t = time, u = initial velocity, a = acceleration, s = distance.
make s the subject of the equation,
Given: a = 1.8 m/s², t = 2 seconds, u = 0 m/s (from rest)
Substitute these value into equation 1
s = 0(2)+1.8(2²)/2
s = 1.2(4)/2
s = 2.4 m.
Hence she has traveled 2.4 m
Answer:
The bulb B glows brighter.
Explanation:
Given that,
A glows brightly and B glows dimly.
According to ohm's law,
Two light bulbs A and B are connected in series to a battery then the current will be same in both bulbs and the resistance is high of bulb A and low in bulb B.
If bulb A connect to a battery and bulb B connect to a same battery separately.
Then bulb B glows brighter because the resistance is high in bulb A so the current will be low.
The resistance is low in bulb B so the current will be high.
Hence, The bulb B glows brighter.
They would have disliked that they had to relearn how to measure.
Answer:
5.08*10^{-13}N
Explanation:
With this information we can calculate the velocity of the proton by taking into account the kinetic energy of the proton:

The magnitude of the magnetic force will be:

hope this helps!
Answer:As the Sun moves throughout the day, some plants can follow it. This is called <u><em>solar tracking.</em></u>
Explanation:
There are flower which tracks the position sun are called heliotropism or solar tracking. flowers.These are the flower which face their bloom side towards the sun to maximize the photosynthesis.The most common example of this is Sun flower.