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a) Two resistors R1 = 3Ω and R2 = 8Ω are connected in parallel with a battery of 12V. Calculate the voltage that flows through each resistor.
a) A 200Ω resistor is connected in series with other resistor of 2kΩ and a battery of 150V. Determine the equivalent resistance and the current flowing through the circuit.
b) A 12V battery is connected in a series circuit with a resistor R1 = 8Ω and a resistor R2 = 3Ω, determine the current that passes through R1 and R2.
Q5. A single bar of material Q of the same cross-sectional area is to be used to allow the same
rate of flow of heat through it as the composite series arrangement when the same temperature
difference exists between its ends. What should be the length of the bar if this rate of flow is
107 W?
A) 0.75 m
B) 0.65 m
C) 1.25 m
D) 1.50 m
potentiometer is 10 m long. It has a resistance of 20 Ω. It is connected in series with
a battery of 3 V and a resistance of 10 Ω. What is the potential gradient along with wire?
A box is sitting on a ramp
angled at 20°. If the box weighs
50 N, what is the normal force
on the box?
A lady is weighing some bananas in a grocery store when the floor
collapses. If the banana's mass is 2 kg and the floor is accelerating
at -2.25 m/s2, what is the apparent weight (normal force) of the
bananas?
A 60 – g rifle bullet leaves the muzzle with a velocity of 600 m/s. The 3.0 kg rifle is held firmly by a 60.0 – kg man. With what velocity will the man and rifle recoil?
.\Car A (m = 1500 kg) initially moving at a certain speed to the east collides head on with car B (m = 1000 kg) initially moving to the west at 15 m/s. After the collision, the two cars move together at 2.5 m/s to the east. What is the initial speed of car A?
State the evidence that supports brownian motion in atomic theory
State the evidence that support Diffusion in atomic theory
