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navik [9.2K]
3 years ago
13

What are the answers to this

Physics
1 answer:
elena-s [515]3 years ago
8 0

Answer:

i cant even see that no one can i will answer it if u can make it bigger

Explanation: eyes

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Scenario:
katrin [286]

Answer:

h

Explanation:

5 0
2 years ago
Read 2 more answers
A baseball is hit so that it travels straight upward after being struck by the bat. A fan observes that it takes 3.00 s for the
Vladimir [108]

Answer:

Initial velocity = 29.43m/s b) Height it reaches = 44.145 m

Explanation:

Using the first equation of motion we have

v=u+at

here

v is the final velocity

u is the initial velocity

a is the acceleration of the object

t is time

When the ball reaches it's highest point it's velocity will become 0 as it will travel no further

Also the acceleration in our case is acceleration due to gravity (-9.8m/s^{2}) as the ball moves in it's influence alone with '-' indicating downward direction

Thus applying the values we get

0=u-(9.81)m/s^{2}\times 3\\\\u=19.43m/s

b)

By 3rd equation of motion we have

v^{2}-u^{2}=2gs

here s is the distance covered

Applying the value of u that we calculated we get

s=\frac{-u^{2}}{2g}\\\\s=\frac{-29.43^{2}}{-2\times 9.81}\\\\s=44.145m

7 0
3 years ago
How long does it take (in minutes) for light to reach mercury from the sun, a distance of 6.02 × 107 km?
Ksju [112]
Light travels at a speed of:
c=3 \cdot 10^8 m/s
The distance between Mercury and Sun is S=6.02 \cdot 10^7 km=6.02 \cdot 10^{10} m, so the time it takes is
t= \frac{S}{c}= \frac{6.02 \cdot 10^{10} m}{3 \cdot 10^8 m/s}  =200.7 s
if we want to convert this into minutes, keeping in mind that 1 min = 60 seconds, we should divide this value by 60:
t= \frac{200.7 s}{60 s/min}=3.34 min
6 0
4 years ago
Read 2 more answers
How much work does a student (m = 60 kg) do when he Climb a tower 80 m high?
gtnhenbr [62]

Answer:

W = 47040  J

Explanation:

Given that,

The mass of a student, m = 60 kg

Height of the tower, h = 80 m

We need to find the work done in climbing the tower. The work done is given by :

W = mgh

So,

W = 60 × 9.8 × 80

W = 47040  J

So, the required work done is 47040  J.

7 0
3 years ago
Galileo proved the superiority of the heliocentric theory over the geocentric theory, but given our knowledge of the universe to
Naddika [18.5K]

Answer:

Explanation:

Galileo proved the superiority of the heliocentric theory over the geocentric theory . Heliocentric theory changed the centre of universe from the earth to the sun . According to this theory , the solar system or the universe revolves around the sun .

But the present knowledge of universe considers sun as one of billions of stars present in the universe , with each star behaving as sun with its  own solar system . The universe is made of cluster of stars with each cluster having their  own centre around with they revolve . These clusters are called galaxy . Sun is a part of cluster called milky way . Sun along with other star of this galaxy revolves around the centre of its galaxy which is a super massive star .

Hence the old heliocentric theory does not fit into the present framework of universe by the scientist.

5 0
3 years ago
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