If the sun’s radiation was to increase by 10%, Energy emitted by the Earth’s surface would

Q: What is the average temperature of the earth

A: This is data based question. Refer to next step for the answer.

Q: Thirty-two joules of heat is added to a 255gram iron bar How much will the iron bar’s temperature…

A: Amount of Heart added = 32 J Mass of iron bar = 255 g Specific heat of iron bar, C=0.46 J/g o C

Q: How much thermal energy is released when 5 kg of a coal sample fromEmroy, Utah is burned?

A: 1 kg of coal when burnt approximately releases 30 MJ of energy. In that case, for 5 kg coal the…

Q: After the 1 kg block of ice melts, the amount of heat required to raise its temperature to 10°C is…

A: Given, Mass of melted ice(water), m= 1kg, increase in temperature, ∆T=100 C=283.15 K.

Q: In an experiment, 200 g of water is heated. The temperature increases by 3°C. The specific heat of…

A:

Q: The rate of heat flow in a solid plate depends on geometry of plate, temperature distribution and…

A: Rate of heat flow in a solid plate is depends upon the thermal conductivity, area and temperature…

Q: A water tank of measurement 2x2x1 m3 is filled up at temperature 96 C. The tank is 1 cm…

A:

Q: Two substances are warmed from 0°C. Their temperatures are plotted as a function of the amount of…

A: The specific heat of a substance is the amount of energy required to raise the temperature of one…

Q: How many kilocalories of heat does an expenditure of 699 kJ produce?

A: Heat = 699 kJ  To find = Kilocalories

Q: At room temperature, an oxygen molecule, with a mass of 5.31x10^-26 kg typically has kenetic energy…

A: The expression for the kinetic energy of molecule is, KE=12mv2       (I)            m=mass of…

Q: The specific latent heat of fusion for gold is 1.10x10^6 J/kg: How much energy is required to melt…

A:

Q: 2kg of ice at -10°C is heated until has melted. how much heat energy has been used? Specific heat to…

A:

Q: What is the frequency of the infrared waves with a wavelength of 20mm?

A: Given data:  The infrared waves Wavelength (λ) = 20 mm = 20×10-3 m Required: Frequency (f)

Q: A piece of steel expands 10 cm when it is heated from 20 to 40°C. How much would it expand if it was…

A: Write the expression for linear expansion for the first case and substitute the known values.

Q: If the sun’s radiation was to increase by 10%, Energy leaving the top of the atmosphere (to space)…

A: The energy entering the top of the atmosphere will be equal to the energy leaving the top of the…

Q: A hot 1 kg chunk of copper is allowed to cool from 700°C to 100°C. If the specific heat of copper is…

A: Given data The mass of the chunk of copper is: m = 1 kg = 1000 g The initial temperature of the…

Q: energy has been added in joules

A:

Q: How much will the temperature change if 5000J of heat is added to 1.0kg of sand?

A: Given data:  Heat added (Q) = 5000 J Mass (m) = 1.0 kg Required: Change in temperature (ΔT)

Q: The thermal energy of a container of helium gas is halved. What happens to the temperature, in…

A: The expression for average kinetic energy for a gas is KEavg=32kBT Average kinetic energy of a gas…

Q: If a wave has a wavelength of 2 m and a frequency of 500 Hz, what is its speed?

A: Given data The wavelength of the wave is given as λ=2 m. The frequency of the wave is given as f =…

Q: The heat of 12 kJ in J will be?

A:

Q: The amount of heat required for melting the ice of mass 1.3 kg at -10 °C is

A: The specific heat of ice below zero degree (c) is 2093 J/Kg.K. Latent heat of the ice  (L) is 334000…

Q: The energy associated with an object's temperature is called Internal Energy Weight

A: Energy is ability of doing work.  It's unit isJoules and it is a scalar quantity.

Q: The area-average mass of the upper one third of the ocean is about 1x106 kg/m2. The energy required…

A:

Q: What is the amount of energy required to raise the temperature of a 2.5 kg block of ice at -25°C to…

A:

Q: Other things being equal, what would the earth's average temperature have been historically (before…

A:

Q: If the mass a piece of aluminum is 2kg and the change in heat is 3K, how much heat does it generate?…

A: Given data,                mass of Aluminum, M = 2 kg                change in temperature, ∆T = 3 K…

Q: Calculate the amount of heat (in kJ) needed to raise the temperature of 50.0g of water 20.0°C to…

A:

Q: A star has a surface area of 6.92*1018 m2 . How much power does it radiate if it has a surface…

A:

Q: If 3000 Joules was used to heat up 100 grams of water, how much would the temperature of the water…

A:

Q: What is thermal energy?

A: The total energy of the moving particles in a matter is known as Thermal energy.  It is the energy…

Q: If 25 kJ is necessary to raise the temperature of a block from 25C to 30C, how much heat is…

A:

Q: A heater transfers 2550000J to a cubic meter of wood if each cubic meter of wood has a mass of 1500…

A: As we know Q=mc∆T=heat gained by m kg of specific heat capacity c to increase temperature by ∆T

Q: At room temperature, an oxygen molecule with mass of 5.31x10^-26kg typically has a kinetic energy of…

A:

Q: What is another name of light energy?

A: The light energy is also known as electromagnetic energy because light is an electromagnetic…

Q: How much heat is released by a system when 159 J of work is done on it to decrease its energy to 67…

A: We have change in internal energy dU=-67 J (Negative because decrease is mentioned) due to work done…

Q: A heater transfers 2550000J to a cubic meter of wood if each cubic meter of wood has a mass of…

A: Specific heat capacity(s) : Heat required to raise the temperature of the 1kg  material by 1 degree.…

Q: What happens to the temperature of the object that radiates energy without absorbing the same amount…

A: If an object radiates energy with absorbing the same amount in return, then there is no net effect…

Q: According to Newton’s law of cooling, the rate at which a substance cools in air is directly…

A: Time taken for substance to cool from To=100oC=373 K to T=65oC=338   t1=15 min and temperature of…

Q: The energy stored in a foot of snow on a steel roof is

A: NOTE: The question must be (on a steep roof) instead of (on a steel roof) To find out which type of…

Q: The radiator of a room contains 10 kilogram of water. If the water gives off 50,000 calories of heat…

A:

Q: If we use 67 W of power to heat 148 g of water, how long will it take to raise the temperature of…

A: Given: mass=148g =0.148 Kg            Power=67W              Ti= 15 °C              Tf=25 °C…

Q: Name the instrument used to measure temperature using the radiation emitted from the body.

A: The instrument used to measure temperature using the radiation emitted from the body is pyrometer.

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.