Questions
Salivary Glands

Salivary glands role in our body and explain its roles 

In: Biology

Digestive glands and pancreas

Explaining of digestive glands and pancreas in our body 

In: Biology

Role of small and large intestine in our body

Explain the role of large and small intestine in human beings

In: Biology

Consider the circuit shown in the following figure. The battery has emf 50.0 V and negligible internal resistance.

Consider the circuit shown in the following figure. The battery has emf 50.0 V and negligible internal resistance. R2 = 3.00 Ω, C1= 3.00 μF, and C2= 6.00 μF. After the capacitors have attained their final charges, the charge on C1 is Q1 = 15.0 μC.

A) What is the final charge on C2?

B) What is the resistance R1?

In: Physics

A capacitor is discharged through a 30 resistor.

A capacitor is discharged through a \(30{\Omega}\) resistor. The discharge current decreases to27 \({\%}\) of its initial value in \(1.7 \mathrm{~ms}\). What is the value of the capacitor in \(\mu F ?\) Express your answer using two significant figures.

In: Physics

How long does it take to reduce the capacitor's charge to 5.00 µC?

A 10.0 µF capacitor initially charged to 30.0 µC is discharged through a 1.50 kO resistor. How long does it take to reduce the capacitor's charge to 5.00 µC?

 

In: Physics

The voltage across each resistor in the two-resistor circuit is ___________ the voltage across the resistor in the one-resistor circuit.

The current through each resistor in the two-resistor circuit is _________ the current through the resistor in the one-resistor circuit (the circuit in Part A). The voltage across each resistor in the two-resistor circuit is ___________ the voltage across the resistor in the one-resistor circuit.

  • the same as / half
  • half / half
  • twice / half
  • half / twice
  • half / the same as
  • twice / twice

In: Physics

The nucleus of 8Be, which consists of 4 protons and 4 neutrons

The nucleus of 8Be, which consists of 4 protons and 4 neutrons, is very unstable and spontaneously breaks into two alpha particles(helium nuclei, each consisting of 2 protons and 2 neutrons).

(a)What is the force between the two alpha particles when they are5.00 X 10-15m apart, and (b) what will be the magnitude of the acceleration of the alpha particles due to this force? Note that the mass of an alpha particle is 4.0026 u.

In: Physics

A 7.80-nC charge is located 1.70 m from a 4.30-nC point charge.

A 7.80-nC charge is located 1.70 m from a 4.30-nC point charge.

(a) Find the magnitude of the electrostatic force that one charge exerts on the other.

(b) Is the force attractive or repulsive?
 

In: Physics

What is the resistance of a nichrome wire at 0.0 degrees C if its resistance 100.00 ohms at 11.5 degrees C?

a)What is the resistance of a nichrome wire at 0.0 degrees C if its resistance 100.00 ohms at 11.5 degrees C?

 

(b)What is the resistance of a carbon rod at 25.8 degrees C if its resistance is 0.0160 ohms at 0.0 degrees C?

In: Physics

Pure silicon contains approximately 1.0×10^16 free electrons per cubic meter.

Pure silicon contains approximately \(1.0 \times 10^{16}\) free electrons per cubic meter.

(a) Referring to the table above, calculate the mean free time? for silicon at room temperature.

(b) Your answer in part (a) is much greater than the mean free time for copper. Why, then, does pure silicon have such a high resistivity compared to copper?

 

In: Physics

What is the temperature on a spring day when the resistance is 216.0 Ω?

A carbon resistor is to be used as a thermometer. On a winter day when the temperature is 4.00 C, the resistance of the carbon resistor is 217.3 Ω. What is the temperature on a spring day when the resistance is 216.0 Ω?
 
Take the temperature coefficient of resistivity for carbon to be α = −5.00×10−4 C-1.

 

In: Physics

What is the resistivity of the wire?

You apply a potential difference of 4.50 V between the ends of a wire that is 2.50 m in length and 0.654 mm in radius. The resulting current through the wire is 17.6 A.

A.What is the resistivity of the wire?

In: Physics

What is the end product of a financial accounting?

What is the end product of a financial accounting?

In: Accounting

What is accountancy and what kind of information provide?

What is accountancy and what kind of information provide?

In: Accounting