Physics, 12.02.2020 18:55 angelteddy033

Substance Specific Heat ( kyk
Aluminum
900
Copper
390
Brass
380
Silver
230
Platinum
130
The melting point of the substances are:
Aluminum: 933.5K
Copper 1357.8 K
Brass: 1173 K
Silver: 1234.9K
Platinum: 2041 K
Room temperature: 293K
The substances referenced in the table are being considered for use in cooking materials. Since the materials must be melted during manufacturing, the
energy required for this must be evaluated. Select the statements that accurately compare the energy required to bring a kg of the materials to their
melting point
Silver requires more energy than copper
Brass requires more energy than silver.
Platinum requires more energy than silver.
Platinum requires more energy than copper
Aluminum requires more energy than copper.
Aluminum requires more energy than brass.
Submit Answers

Answers: 3

Show answers

Another question on Physics

Physics, 22.06.2019 11:20

The ultracentrifuge is an important tool for separating and analyzing proteins. because of the enormous centripetal accelerations, the centrifuge must be carefully balanced, with each sample matched by a sample of identical mass on the opposite side. any difference in the masses of opposing samples creates a net force on the shaft of the rotor, potentially leading to a catastrophic failure of the apparatus. suppose a scientist makes a slight error in sample preparation and one sample has a mass 10 mg larger than the opposing sample. if the samples are 12 cm from the axis of the rotor and the ultracentrifuge spins at 70,000 rpm, what is the magnitude of the net force on the rotor due to the unbalanced samples? ( be thorough on your answer)

Answers: 3

Answer

Physics, 22.06.2019 16:30

Select all the correct answers. which three statements about electromagnetic radiation are true?

Answers: 3

Answer

Physics, 22.06.2019 21:40

Engines for propeller-driven aircraft are limited in their maximum rotational speed by the fact that the tip speed of the propeller must not approach the speed of sound in air (mach i). taking 6 ft as a typical diameter for a propeller of a light airplane and 1100 fils as the speed of sound, find the upper limit on the rpm (revolutions per minute) of the propeller shaft.

Answers: 3

Answer

Physics, 23.06.2019 03:00

The basketball coach tells his team to run sprints back and forth across the court, which is 30 m long. they start at the left end of the court, run back and forth 6 times, then end back at the left end of the court where they began. what distance did they run? what is their displacement?

Answers: 1

Answer

You know the right answer?

Substance Specific Heat ( kyk
Aluminum
900
Copper
390
Brass
380<...

Questions