When an appliance whose power usage is X watts is run for Y seconds, it uses X x Y joules of energy. The energy unit used by electrical utilities in their monthly bills is the kilowatt-hour(kWh, that is,1 kilowatt is used for 1 hour.) How many joules are there in a kilowatt-hour? If electricity costs $0.09 per kilowatt-hour, how much does it cost per megajoule?

Q: A baker has 150, 90, and 150 units of ingredients A, B, C, respectively. A loaf of bread requires 1,…

A:

Q: If both the mass m of a simple pendulum and its length L are doubled, the period will

A: we are to study the time period change in pendulum

Q: Use your weight in pounds (while standing on the surface of the Earth) to calculate your mass in the…

A: Given that  1 kg weighs approx. 2.205 lb on the surface of the Earth

Q: What is, in MW, the power generated by a turbine that has a power coefficient equal to 0.24 when the…

A: To find: The value of power generated by turbine. Given: The value of power coefficient is, Cp=0.24.…

Q: My desk has a mass of 165 lbm at the Earth's surface. What is its weight in pounds force (lbf) and…

A: Given data as per the question Mass of desk on earth =165 lbm Value of g on Mars =5.5 ft/s2 mass  of…

Q: 4) Find: 01(s)/T(s) T(1) OA) 2 N-m-s/rad 7 N-m-s/rad 1 ke-m? 1 kg-m? 3 N-m/rad 8 N-m/rad

A: Given : To find : θ1(s)T(s)

Q: 1.20 A tank contains 0.3 kmol of carbon dioxide (CO₂) gas. The volume occupied by the gas is 2.5 m³.…

A: Given that,  0.3 kmol of CO2  Volume, V= 2.5 m3  To find:  Specific Volume, v =?

Q: Newton's second law of motion leads to:

A: Newton's second law of motion leads to Answer: the rate of change of linear momentum is equal to the…

Q: A European automobile has a gas mileage of 17 km/L. What is the car’s gas mileage in miles per…

A: Given: The European automobile has a gas mileage is C=17 km/L. The unit conversion factor to convert…

Q: 1.27 A 5-m container is filled with 900 kg of granite (density of 2400 kg/m³). The rest of the…

A: mass = density*volume specific volume = total volume/total mass

Q: 1.39 ** A ball is thrown with initial speed v, up an inclined plane. The plane is inclined at an…

A:

Q: Imagine that as an engineering intern you have been assigned the task of selecting a motor for a…

A: Equilibrium is a state of a body at which there is no disturbance in a system neither inside nor…

Q: Determine the weight in newtons of a woman whose weight in pounds is 125. Also, find her mass in…

A: GIVEN DATA WEIGHT GIVEN IN POUND =125lb WE HAVE TO FIND WEIGHT IN N MASS IN slug MASS IN kg

Q: find the answer A piston-cylinder device provides 8 kJ of work to an external device. 2 kg of air…

A:

Q: 1.50 *** [Computer] The differential equation (1.51) for the skateboard of Example 1.2 cannot be…

A:

Q: Some scientists believe that the collision of one or more large asteroids with the Earth was…

A:

Q: Q1. As shown in the image below, the force acting on the box is F = (C. 8²) s²) N, where constant C…

A:

Basic Terminology in Mechanics

The area of science and mathematics concerned the motion of the objects, the relation between the force matter, and motion if specified. Forces exerted over the objects result in displacements or changes in the position of an object concerning its environment. This branch of physics keeps its roots in Ancient Greece in the form of the scripts of Aristotle and Archimedes.