A metal sphere has a radius of 10 cm. 27,328 electrons are sprayed on 10 square centimeters of the sphere's surface. After 10 minutes, how many electrons are there on each square centimeter?

Q: A scooter drives 110 km in 4.5 hours. What is the speed of the car in km/h?

A:

Q: An electric toaster operating on 120 volts draws a current of 6 amperes. The resistance of the…

A:

Q: An electric heater plugs into a 120 V outlet and uses 1500 W of power. How much current does the…

A: Given: Voltage, V=120 V Power, P=1500 W To find: Current drawn by heater

Q: A sphere is charged with electrons to -1 * 10^-5 C. How many electrons make up this charge? The…

A: given, A sphere is charged with electrons to -1 * 10^-5 C elemental charge of electron is 1.6 *…

Q: A furnace for an electric heating system is rated at 121 amperes and 27,500watts. What is the…

A: Given: The current is 121 A. The power is 27500 W.

Q: What is the Power (Watts) dissipated in a 25 Ohm circuit if it has 3.0 Amps of current?

A: SOlution: Given that current I =3 Amps Resistance r = 25 Ohm the power dissipates

Q: The power consumed by a refrigerator is 450 W. This refrigerator works for a total of 6 hours every…

A: Given that power consumed by refrigerator and refrigerator work a total of 6 hours in one day and…

Q: How many cells, each one having an open circuit emf of 4.5 V and an internal resistance of 0.5 ohms,…

A: Given that:Internal resistance r=0.5 ΩOpen circuit EMF of cell, E=4.5 VSupply current, I=1.421…

Q: A positive charge of 78 nano-coulombs is 13 cm from a charge if 98 nano-coulombs. The force on one…

A:

Q: A cell phone charger is rated for 0.4 amps. It takes 90 minutes to get a full charge. How much does…

A:

Q: transformer

A: Given: Primary voltage of transformer is Vp=120 V Secondary voltage of transformer is Vs=12500 V…

Q: continuously

A:

Q: A voltage of 12 volts across a lamp produces a current of 0.4 ampere. What is the filament…

A: Voltage(V),  current(I) and resistance(R) are related by the following formula, R = V/I

Q: A transformer has a primary with 4000 windings and a secondary coil with 78,000 windings. If the…

A:

Q: A resistor of 3 ohms is connected in parallel with one of 2 ohms resistance. If the combination is…

A: Given  R1=3 Ohms R2=2 Ohm R3=4 Ohm

Q: A flashlight with a resistance of 3 ohms produces a current of  9 A. What is the voltage of the…

A:

Q: A coffee percolator rated at 120 volts, 1,400 watts requires 15 minutes to complete its cycle. How…

A:

Q: An aircraft is preparing to take off, so it is at rest. The airplane runs 8,000 feet on the runway…

A:

Q: What is the charge that provides an electric field of 5 N/C over an area of 1m2?

A: Write the expression for the electric field. Here, q represents the charge, A represents the area,…

Q: What is the ratio of the speed of one motor turning at 1,750 revolutions per minute to the speed of…

A: Speed of first motor = 1,750 rpmSpeed of second motor = 3,500 rpmRatio = ?

Q: An electric water heater uses 3,517 W from a 220 V AC line.  What is the peak current, in amps?

A:

Q: Tungsten has a density of 19,300 kg/m³. If you have a cube of tungsten that measures 5 cm on a side,…

A: Given that,A tungsten has a density : ρ=19,300 kg/m3If you have a cube of tungsten that measures on…

Q: A convex mirror has a distance to the object of 3.5 2) cm. The distance to image is (-6.2) cm. What…

A: Convex mirror: The ray diagram for the convex mirror is given below. From the ray diagram, we can…

Q: n electric heater had a power rating of 1.5 kilowatts if the heater is run for 6 hours and…

A: Given Power of electric power is P=1.5 kW Time is t= 6 h Cost is =$ 0.12 /kWh

Q: The force on two positive charges of magnitude 9nC and 17nC is 220N. What is the distance between…

A: Write the given values with the suitable variables. q1=9 nCq2=17 nCF=220 N Here, q1, q2, and F are…

Q: A car is traveling to San Antonio.  It takes the car 4 hours to travel a distance of 200 miles.…

A:

Q: A lamp draws a current of 125 milliamperes and has a filament resistance of approximately 50.0 ohms.…

A: According to Ohm's law, Voltage(V) = Current(I) × Resistance (R)

Q: What is the voltage of a circuit that has a current of 15 amps and a resistance of 3 Ohms?

A: Given, Current I = 15 Amps  Resistance R = 3 Ohms

Q: A light bulb with a resistance of 10 ohms is connected to a battery and emits 40 Watts of light.…

A:

Q: A watch loses 1 second every week.  How many minutes will the watch be off at the end of 1 year?

A: Given  A watch losses 1 sec every week

Q: If a charge of 8 C placed in an electric field experiences a force of 0.9 N . What is the electric…

A: Write the variable with the given values.

Q: An FM radio station transmits at a frequency of 102. MHz. What is the wavelength of these radio…

A: Given data:  An FM radio wave  Frequency (f) = 102 MHz Required: Wavelength (λ) in meters

Q: A lamp consumes 1400 J of electrical energy in 12 seconds. what is it's Power?

A: Introduction :   In this question we are provided it value of work and time . With these data we…

Q: A 1,148 kg car is driving up a 1,692.1 meters mountain. If it will take 2.599 minutes to get to the…

A: The given data are: m=1148 kgh=1692.1 mt=2.599 m Here, m is the mass, h is the height, and t is the…

Q: A 10-ohm resistor has a constant current. If 1,200 C of charge flow through it in 4 minutes what is…

A: Given data:  Charge (q) = 1200 C Time (t) = 4 min = 240 seconds Required: Current (I)

Q: What is the equation for current in terms of power?

A: The relation between power and current is given by,                  P=VI   ...............Equ.1…

Q: A circuit driven by a 15-V battery contains a 6-Ohm light bulb. If the circuit runs for 45 minutes,…

A: SOlution: Given that V = 15 V R = 6 Ohm T = 45 minutes