Answer:
334.314 (kJ)
Explanation:
1) the formula for the required energy is: Q=c*m(Bp-t), where c - 4100 J/kg*C; m - 0.9 kg; Bp - 100.6 C; t - 10 C.
2) according to the formula above:
Q=4100*0.9*(100.6-10)=41*9*906=334314 (J).
Answer: 317.0 m/s
Explanation:
The motion of the bullet is a projectile motion, with:
- a uniform motion with constant speed v along the horizontal direction
- an accelerated motion with constant acceleration toward the ground
We know that the starting height of the bullet is h=1.4 m. If we consider the vertical motion only, the initial velocity is zero, so we can write:
The bullet reach the ground when y(t)=0, so the time taken is
During this time, the bullet travels d=168 m horizontally, so its horizontal speed (which is equal to the initial speed of the bullet) is given by
Answer:
Required horizontal distance is 0.9279 meters
Explanation:
The situation is represented in the attached figure
The horizontal distance can be seen to be equal to
In the upper triangle we have
Now the angle can be calculated using Snell's law
By snell's Law we have
Since light comes from air thus
Light enter's the water thus we have
Applying values we calculate as
Now in the attached figure we have
Solving for we get
thus the required horizontal distance is
There won't be another period where many brilliant discoveries are made in such a span of time because of the high degree of advancement already.
<h3>What is Technology?</h3>
Tgis is defined as the application of scientific knowledge for practical purposes.
We have advanced technological advancement which is why there won't be many discoveries in such time span.
Read more about Technology hee brainly.com/question/7788080
Answer:
562 miles per hour.
Explanation:
As given in the question, the formula for the maximum speed on a curved road is
Given value of feet
So the maximum safe speed will be
miles per hour.
Rounding off to the nearest whole number we get the maximum safe speed at the curved road is 562 miles per hour.