Answer:
0.48 s
Explanation:
The vertical position of the ball at time t is given by:
where
h = 3 m is the initial height
u = 0.4 m/s is the initial velocity
g = 24.5 m/s^2 is the acceleration of gravity on the surface of Jupiter
The negative signs are due to the fact that the direction of the initial velocity and of the acceleration are downward
The ball reaches the surface at time t such that y(t)=0, so:
Substituting values,
Solving the second-order equation, we find:
which gives two solutions:
t = 0.48 s
t = -0.51 s
We discard the second one since it is negative, so the ball reaches the surface after 0.48 s.
Answer:
due to heaviness
Explanation:
because metal is heavier than water
Answer:
2.4 meters
Explanation:
Let
m1= 10 kg
m2= 6 kg
Distance of m2 from pivot = 4 m
Distance of m1 from pivot = x (suppose) =?
If system is not rotating then it should be in equilibrrium position. And in this case clock-wise and anti -clock wise torques should balance each other i-e
weight of m1 mass bolck × x = weight of m2 mass block × 4
m1×g× x = m2 × g × 4
==> 10×9.8×x= 6×9.8×4
==> x = 6×9.8×4 / 10×9.8
==> x = 24/10=2.4 m
Answer:
3.53 amps
Explanation:
Given data
Power= 60W
Voltage= 17V
The expression relating current, power, and voltage is
P= IV
substitute
60= I*17
I= 60/17
I= 3.53 amps
Hence the current that flows is 3.53 amps
Answer:
no way to tell since the ocean surface is moving too violently it's not possible to determine the reflected angle