Physical quantities - math word problems - page 122 of 177
Number of problems found: 3535
- Treasure map
On a treasure map, actual distances are directly proportional to scaled distances. If 15 miles is represented by 3 centimetres on the map, does 9 centimetres represent 135 miles? - The oscillation
The oscillation of a mechanical oscillator can be used to measure weight. A body of the unknown weight is suspended on a spring with a stiffness of 20 N times m. The resulting oscillator oscillates with a frequency of 1.6 Hz. Find the weight of the body. - Radio signal oscillations
The time signal in the radio consists of four sound marks with a frequency of 1,000 Hz, of which the first three have a duration of 100 ms and the fourth 500 ms. How many oscillations will occur at each mark? - Cycling trial
The racer in the cycling time trial rode at a speed of 12 meters per second. How many km has he covered in 3/4 hours? - Suitcase weight
What was the suitcase's weight if I lifted it to a height of 150 cm and did the work 0.5 kJ? - Sand
How much can m³ of sand be loaded on a car with a load capacity of 5 t? The sand density is 1600 kg/m³. - Rain probability
Last year, it rained 12 days in March. What is the probability that it rained on March 20? - Acceleration of a car
What was the initial speed of a car that, after accelerating at 2 m/s², reached a speed of 30 m/s in 10 seconds? - Aluminum - density
The density of aluminium is 2,700 kg/m³. Calculate the mass of an aluminium cube with a volume of 80 cm³. - Cooker electrical work
A cooker connected to a 40 V voltage source draws a current of 0.5 A. Determine the amount of electrical work the cooker does in 3 minutes. - Pool water flow
Five hundred liters of water will flow into the pool in 5 minutes, and 120 liters of water will flow out of it in 12 minutes. How many liters of water will be added in 1 hour? - Aluminum resistance temperature
The aluminum coil line has a resistance of 4.6 Ohm at an elevated temperature of 64 °C. At what base temperature will the resistance be 2 ohms? - Prague Huddersfield scale
Prague's direct distance to Huddersfield (United Kingdom) is 1680 km. What is the map's scale, at which this distance is 84 cm? - Map scale
Calculate the following example: On a map with a scale of 1:50,000, two places, A and B, are 4 cm apart. Find out: a) what is the distance between these places in reality; b) what is the scale of the map in which these places are 12 cm apart? - Beam force distribution
A body weighing 400 kg is suspended at a distance of 1 m from one end of the beam on a beam weighing 100 kg and 5 m. How large do forces act at the ends of the beam? - Car speed
The car covered the track 157.5 km in 2 hours and 15 minutes. How fast was he moving? - Pool plan marking The pool is 50 m long and 20 m wide. How will it be marked on the plan on a scale of 1:200?
- Free fall
How long and at what speed does the body fall to the ground during a free fall from a height of 35 m? - Buoyancy force
An adult male has a volume of about 0.070 m³. How much buoyancy affects him when he is completely immersed in water? - Two friends
Michael and Teresa have the same 9 km long journey home from SNP Square. It takes Michael an average of 2/5 hours by tram, and Teresa rides a bicycle at an average 18 km/h speed. Guess who comes home early and how much?
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