Fundamentals of Physics - math word problems - page 45 of 50
Number of problems found: 985
- Resistance
Determine the bulb's resistance with the current 200 mA and is in a regular lamp (230 V). - Diver and pressure
Determine the pressures exposed to a diver without a suit at a depth of 15 meters, with a small space suit at a depth of 25 meters, and a massive suit at 70 meters in water. - Braking speed
What speed was the car moving until the driver started braking when it moved with a constant acceleration a = -1.2 m/s² during braking until it stopped, traveling a distance of 135 m? - Copper wire
What is the weight of 1000 m copper wire with a diameter of 5 mm when metric density p = 8.8 g/cm³? - Wind speed
The plane flies at a speed of 240 km/h and flies a route of 396 km in 3 hours 20 minutes there and back - once it flies with the wind, the second time it flies against the wind, which has a constant speed the whole time. What is the wind speed? - Electron charge
How many electrons must be together to put a charge of -1 C together? - Projectile height
A 100 g body is ejected vertically upwards from the surface of the Earth at an initial speed of 30 m/s. Determine the height at which the body rises and its potential energy at the path's highest point. - Sikorsky helicopter
The American concern United Technologies is testing the Sikorsky X2 helicopter, which can fly at a record speed of 464 km/h. How long would it take an F22 Raptor fighter flying at a supersonic speed of 1,856 km/h to catch up with a Sikorsky X2 helicopter - Cyclist speed
A cyclist covered a track of 40 m in 5 s. The first section of the 30 m track was covered in 3 s; the remaining section was covered in 2 s. Specify: a) the average speed of the cyclist on the first section of the track b) the average speed of the cyclist - Measuring cork
Simon boasted that he had taken away a block of cork measuring 0.5 m x 0.5 m x 1.2 m. Is it possible we know that 1 m of cubic cork weighs 300 kg and children from 10 to 15 years old can carry a maximum load of 5 kg? - Big celebration
An inseparable part of all big celebrations is the entertainment, during which the participants try to pull off the tablecloth from the set table so that nothing falls from the table on the ground. Let us look at this trick up close. We will start from Ne - Electricity consumption - Filip
Last year Filip was writing a long school paper. As a great conservationist of nature, however, he was unable to decide which is more ecological - to write the paper on a computer, or to write the paper by hand. Filip found out that: the paper written on - Water temperatures
To 25 liters of water at 50 °C, we add 15 liters of water at a different temperature. How many °C should the water be colder than 50 °C so that 40 liters of the water obtained has a temperature of 42.5 °C? - Cyclist and car A cyclist who runs at a speed of 20 km per hour will arrive at the finish in 4.5 hours. How fast does the car have to drive the same route in 2 hours?
- Beam on platform
A homogeneous wooden beam of length 6.00 m and mass 72.0 kg lies on a horizontal platform high above the ground and overhangs by 1.80 m over the edge of the platform a) Decide whether a person with a mass of 60.0 kg can stand on the overhanging end of the - Fog
The car started in fog at a speed of 30 km/h. After a 12-minute drive, the fog dissipated, and the driver drove the next 12-minute distance, 17 km. The driving conditions deteriorated during the last 17 km, and the driver drove at 51 km/h. a) Calculate th - Water level
To cuboid-shaped poll, bottom size 2 m and 3.5 m, flows water at a rate of 50 liters per minute. How long will it take for water to reach a level of 50 cm? - Atmospheric pressure
The measured value of atmospheric pressure is 96,000 Pa. We want to verify this value with a closed tube at one end. Before measuring, fill the tube with glycerol (density of glycerol ρ = 1200 kg/m3). How long does the tube have to be? - Acting
Two locomotives are used in a train set. One locomotive pulls the train and the other pushes it. The pulling locomotive exerts a force of 500 kN on the train, and the pushing locomotive exerts a force of 400 kN. a) Draw a diagram of the described situatio - Speed comparison
Arrange the listed speeds from smallest to largest: Š - The sprinter will run 60 meters in 7 seconds, L - chairlift passes 180 meters in 2 minutes, A - the car travels 35 km in half an hour, H - hippo, during the attack, runs 50 meters in 60 seconds.
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