Answer:
y is doubled
Explanation:
If x is halved, that means the value is doubled. Here is an exmaple:
y=1/2. If the denominater is doubled, y would equal y=1/1. So, the value of y has doubled from 0.5 to 1. Therefore, if the denominator is halved, the solution will be doubled.
B. Gamma rays
Gamma rays have highest energy
Answer:
Violet
Explanation:
Wavelength spectrum of visible light for the range of 390nm to 460nm is seen as violet. So the violet colour will be seen and reflected as what the eyes will see
(a) The mechanical advantage of the ramp is determined as 2.5.
(b) The pulley provides additional advantage since it assisted the boy in pulling up the load.
<h3>
What is mechanical advantage?</h3>
The mechanical advantage of an object is the ratio of output force to input force, hence it is called force ratio.
<h3>Mechanical advantage of the ramp</h3>
M.A = Lp/h
where;
- Lp is the length of the inclined plane
- h is height of the inclined plane
M.A = 10/4
M.A = 2.5
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Answer:
Explanation:
since the ball was thrown at 0s and caought again at 5 s. applying eqaution of motion.
0 = u×5 - 
×10×5×5
solving the eqaution we gaet initial velocity u = 25 m/s.
there fore total energy E = ×m×25×25 J
where m is the mass of the ball according to conservation of energy E remains constant
conservation of energy:
kinetic + potential energy of the ball = E
kinetic energy = E - mgh 
1
h = 
applying ot in the eqaytion 1
kinetic energy = e - 
2
Therefore kinetic energy vs height will be a straight line with negative slope and kinetic energy vs time will be parabola that is open upward.
