Answer:
Using your right-hand: point your index finger in the direction of the charge's velocity, v, (recall conventional current). Point your middle finger in the direction of the magnetic field, B. Your thumb now points in the direction of the magnetic force, F.
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Answer:
d= 852.01 m
Explanation:
Given that
Speed of sound in air u= 343 m/s
Speed of sound in concrete v= 3000 m/s
Lets take time taken by sound in the concrete is t then the time taken by sound in air will be t+2.2 s .
The distance (d)travel will be same in both the cases.
We know that
Distance = Velocity x time
So
d= 3000 x t = 343 x (t+2.2)
3000 t = 343 t + 343 x 2.2
t= 0.284 s
So the distance d
d= 3000 x 0.284 m
d= 852.01 m
When an element has a low specific heat, this means that it requires less energy to increase the temperature of this element. Specific heat is measure in Joules/GramDegreeCelcius because it measures the amount of joules required to raise one gram of the element by one degree Celcius.
Answer:
Lastly, the heat transfer rate depends on the material properties described by the coefficient of thermal conductivity. All four factors are included in a simple equation that was deduced from and is confirmed by experiments. The rate of conductive heat transfer through a slab of material, such as the one in Figure 3, is given by
Q
t
=
k
A
(
T
2
−
T
1
)
d
,
where
Q
t
is the rate of heat transfer in watts or kilocalories per second, k is the thermal conductivity of the material, A and d are its surface area and thickness, as shown in Figure 3, and (T2 − T1) is the temperature difference across the slab. Table 1 gives representative values of thermal conductivity.
Explanation:
Answer:
0-4 acceleration comes at 12 m/s where (B) stagnates at 12 m/s and remains for 4 seconds (C) is breaks being activated slowing the car to 6 m/s in 2 seconds and (D) over the course of 4 seconds brings the car to 10 m/s.
Explanation: