That's not a good idea. You don't want to connect batteries with different voltages in parallel. What happens is large currents among the batteries themselves, and some of the batteries quickly die.
When the batteries are connected in SERIES, they behave as a single battery whose voltage is the sum of their individual voltages.
Answer:
6.25 m/s
Explanation:
Given parameters
Initial mark = 65
Final mark = 15
time taken = 8s
Unknown:
Velocity of the runner = ?
Solution:
Velocity is the displacement divided by time;
Velocity =
Displacement = Initial mark - final mark = 65 - 15 = 50m
Now, insert the parameters and solve;
Velocity =
= 6.25m/s
Answer:
153.0815W/m.K
Explanation:
Heat transferred in phase is changed is expressed as:
(m-mass, Q-heat, L-Latent heat of phase change)
Latent heat is the heat required to change the phase of 1kg of the material.
#The rate of heat flow(by conduction) per unit time:
#Heat flowing through melting ice.

To solve for k:




The thermal conductivity k of the metal is 153.0815W/m.K
Dispersion-Distributing something over an area.Diffusion-the scattering of light by reflection from a rough surface.
Refraction-<span>Turning or bending of any wave.</span>
Reflection- Image.