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Answer:- Step 1: Given data, The relative density of gold =19.3 The density of water = 1000 kg/m3 Step 2: Formula: Step 3: Calculation Substitute the values in the above formula The density of the gold = 19.3*1000= 19300kg/m3 Hence, the density of gold is 19300 kg/m3

Platinum has a much higher density than aluminum. Which has more mass, 1 m3 of platinum or 1 m3 of aluminum?

Answer:- The total amount of heat desired to increase the temperature of 10.0 g of aluminum by 33∘C will be q=10.0g ⋅0.90Jg∘C⋅33∘C q=297 J

A teapot contains 0.5 kilograms of water. Five thousand joules of heat are added to the teapot. What is the increase in the temperature of the water? The specific heat of water is 4,184 J/kg°C.

Answer:- Given: – Mass of the iron, m = 150g = 0.15kg Specific heat of iron, s = 480Jkg−1∘C−1 Initial temperature: Ti=20∘C Final temperature Tf=25∘C Now, Change in temperature ΔT=Tf−Ti=5∘C The quantity of heat supplied is specified as ΔQ=msΔT ……………………… (i) Now, substituting the specified values in the above equation, we get ⇒ΔQ=(0.15×480×5)J ∴ΔQ=360J Henceforth, the…

Find the angular speed of a ferris wheel that makes 12 rotations during 3 minute ride. Express your answer in rotations per minute.

You kick a football off the ground with a horizontal velocity of 12 m/sec to the right and a vertical velocity of 29.4 m/sec upward. Draw a diagram showing the football’s trajectory. Draw vectors showing its horizontal and vertical velocity at each second until it returns to the ground.

Use a scaled drawing to find the displacement for each of the following. Then check your work with the Pythagorean theorem. a. an ant that walks 3 meters north and 3 meters east b. a cat who runs 6 meters west and 2 meters north c. a car that drives 8 km south and 6…

A 200-newton television sits on a table. Draw a free-body diagram showing the two forces acting on the television.

A system of pulleys is used to lift an elevator that weighs 3,000 newtons. The pulley system uses three ropes to support the load. How far would 12,000 joules of input work lift the elevator? Assume the pulley system is frictionless.