IdeasCuriosas - Every Question Deserves an Answer Logo

Questions in physics

[Answered] Two locomotives approach each other on parallel tracks. Each has a speed of [tex]v = 95 \, \text{km/h}[/tex] with respect to the ground. If they are initially [tex]d = 5.0 \, \text{km}[/tex] apart, how long will it be before they reach each other?

[Answered] Your friend of mass 150 kg can just barely float in fresh water. Calculate her approximate volume. Express your answer to two significant figures and include the appropriate units.

[Answered] What weight of water is displaced by a 100-ton floating ship? What is the buoyant force that acts on this ship?

[Answered] 2. An optical fibre is 1200 km long and it takes light 0.006 s to travel from one end to the other. Calculate the speed of light in glass.

[Answered] The Burj Khalifa in Dubai is the world's tallest building. It rises to an amazing 828 meters above the ground. If you were to get to the top using the stairs, you would climb a total of 3,234 steps! If each of these steps has a depth of 20 cm, calculate the total work done by a man weighing 800 N who climbs to the top of the stairs.

[Answered] How does uniform linear motion differ from uniform circular motion?

[Answered] A microwave oven has a power rating of 850 W. If the microwave is turned on for 6 minutes, how much energy will it use?

[Answered] Is there a difference between potential difference, voltage, and EMF?

[Answered] A chemical symbol is one or two letters used to represent an element.

[Answered] How are parallel circuits used in homes?