If you drop a 50 gram piece of metal that has a temperature of 110°Celsius into 1000 grams of water at 25°Celsius, <span>D.)The water and the metal’s temperature will reach the same temperature. In any system undergoing heat transfer, the objects involved will eventually reach the same temperature, signifying thermal equilibrium.</span>

7 0

3 years ago

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a proton travelling along is x-axis is lowed by a niform electric field E. at x = 20.0 cm, the proton has a speed of 3.5x10^6 m/

anzhelika [568]

Answer:

Magnitude of electric field is 1.06 x $10^5$ V/m along negative X-direction

Explanation:

Given: initial velocity of proton = u = 3.5 x $10^6$ m/s

final velocity of proton = v = 0 m/s

initial point $l_i$ = 0.2 m and final point is $l_f$ = 0.8 m

According to conservation of energy:

change in in kinetic energy = change in potential energy of proton

⇒ $\frac{m}{2}(v^2-u^2 ) = qE(l_i - l_f)$

where q and m is the charge and mass of proton E is the electric field , $l_i$ and $l_f$ is the initial and final position of proton

on substituting the respected values we get,

1.023 x $10^-^1^4$ = 9.6 x $10^-^2^0$ x E

⇒ E = 1.06 x $10^5$ V/m

external force is opposite to the motion as velocity of proton decreases with distance.

Therefore, magnitude of electric field is 1.06 x $10^5$ V/m along negative X-direction

5 0

3 years ago

A coil is connected in series with a 12.6 kΩ resistor. An ideal 65.2 V battery is applied across the two devices, and the curren

ivolga24 [154]

To solve the problem, start by applying the concepts related to current in an RL circuit. The current is defined exponentially and using Ohm's law we can put the initial current in terms of the voltage and resistance. Consecutively with the calculated time constant we can find the respective inductance. For the second part we will apply the electrical potential energy connectors to find the amount of stored energy.

PART A)

$i = i_0 (1-e^{-t/T})$