Answer:
Explanation:see attachment for answers and calculations
The correct answer is option C. insulator.
An insulator material<span> has a high resistivity and prevents the movement of electrons. It is a hindrance in the path of electrons & resists the current flow.
The conductor conducts electrons as it offers very less resistance. A battery provides voltage to the circuit.
Hence, option (c) is correct. </span>
Answer:
Explanation:
According to Charles Law
=>
Where = 0.0279 m³, = 280 K and = 320 K
=>
=> = 0.03189 m³
Answer:
20.1 m
Explanation:
First, find the time it takes for the cannonball to travel the horizontal distance of 50.0 m.
Given (in the x direction):
Δx = 50.0 m
v₀ = 68 cos 25° m/s
a = 0 m/s²
Find: t
Δx = v₀ t + ½ at²
(50.0 m) = (68 cos 25° m/s) t + ½ (0 m/s²) t²
t = 0.811 s
Now find the vertical displacement after that time.
Given (in the y direction):
v₀ = 68 sin 25° m/s
a = -9.8 m/s²
t = 0.811 s
Find: Δy
Δy = v₀ t + ½ at²
Δy = (68 sin 25°) (0.811 s) + ½ (-9.8 m/s²) (0.811 s)²
Δy = 20.1 m
To solve this problem it is necessary to apply the concepts related to the thermal transfer rate. In general, the transfer rate can be expressed as
Where,
k = Thermal conductivity
A = Cross-sectional area
= Change of temperature
L = Length
Since the two heat transfer rates are equivalent we have to:
Replacing we have,
Therefore the temperature where the two bars are joined together is 300°C