<span>We first calculate the velocity of the ball when it hits the ground; this is equal to the square root of the quantity (2*g*d) where g is the acceleration of gravity (9.8 m/s^2) and d is the distance fallen, 1.5m.
So, we get a velocity of sqrt(2*9.8*1.5) = 5.42 m/s.
We can calculate the impulse force applied to the putty ball by using Newton's second law, which states that the applied force is equal to the product of mass and acceleration, where acceleration can be further decomposed as the change in velocity divided by the change in time. Thus, inputting the known values, we have:
F = ma = m(dv/dt) = 1.0*5.42/0.045 = 120.4 newtons.</span>
The color palettes that is on trend for 2020 is d. hue of pink
Answer:
1. The correct way a cell phone call goes out is;
The phone call goes out, transmits through radio waves, then moves to the central hub. Then the signal go to the nearest tower to the receiver of the call
2. Long wavelength
3. Microwave
Explanation:
1. When making a call through a cell phone, the speech made is digitized such that it is converted to electrical signals which are then converted into number strings that are transmitted out of the antenna of the phone as radio waves which are then picked up by the closest cellphone tower mast which then transmit the signal to the applicable central hub from where the signal is transmitted to the tower closest to the intended call receiver
Therefore, the correct option is that the phone call goes out, transmits through radio waves, then moves to the central hub. Then the signal go to the nearest tower to the receiver of the call
2. The property of AM frequencies that allow them to travel over long distances is long wavelength
The frequency of AM radio waves is between 540 kHz and 1600 kHz, which can be propagated as ground wave or by the ionosphere at night
3. Cell phones makes use of the subcategory of microwave which is the super high frequency (SHF) band which with a range of 3 GHz to 30 GHz
Answer:
Because 1 change in one factor can effect the other and that one can effect the other and so on and so on.
So, let's just say water were to stop flowing, how would the oceans take that? How would precipitation take it?
Answer:
1728.42857143 m/s²
0.00155883061577 s
259.264285715 m/s²
0.0103922041051 s
The child will get injured if he/she falls on a hardwood floor
Explanation:
t = Time taken
u = Initial velocity
v = Final velocity
s = Displacement
a = Acceleration
g = Acceleration due to gravity = 9.81 m/s²
Magnitude of deceleration is 1728.42857143 m/s²
Time taken is 0.00155883061577 s
Magnitude of deceleration is 259.264285715 m/s²
Time taken is 0.0103922041051 s
It is likely that the child will get injured if he/she falls on a hardwood floor.
It is less likely that the child will get injured if he/she falls on a carpeted floor.
