When 4050 joules of heat were applied to 150 g of aluminum, the final temperature was 50°C. What was the initail temperature? Take specific heat capacity of aluminum as 900 J/kg°C​

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain

Two conductors, a and b, are each in the shape of a tetrahedron. but of different sizes. they are charged in the following manner: 1. tetrahedron a is charged from an electrostatic generator to charge q. 2. tetrahedron a is briefly touched to tetrahedron b. 3. steps 1 and 2 are repeated until the charge on tetrahedron b reaches a maximum value. if the charge on tetrahedron b was q/4 after the first time it touched tetrahedron a. what is the final charge qbmax on tetrahedron b?

Which system of units is used by only a small number of countries in the world, including the u.s.