Physical quantity - math word problems - page 186 of 319
A physical quantity is a term numerically describing a property or state of a physical object. For example, a physical quantity is a length, and its corresponding physical unit is a meter (symbol m). Similarly, the quantity is weight, and the unit is the kilogram (kg). Physical quantities can be divided into a scalar (has magnitude), vector (has magnitude and direction), and tensor (has magnitude and multiple directions).Number of problems found: 6363
- Horizontal 83020
What work must be done to bring a body of mass of 2 kg lying on a smooth horizontal plane from rest to a speed of 2 m/s? - Kangaroo 82979
A kangaroo can move at a speed of 65 km/h. How many minutes will it take to move at this speed to a place 6500 m away? - Temperature 63004
Brass weighing 2.5 kg absorbs the heat of 180 kJ. How does the temperature of the brass change? The specific heat capacity of brass is 0.36 kJ / C - Calculate 55981
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?
- Movement 43831
The crane motor has a constant power of 9 kW. How long does it take to lift a body weighing 12 tons to a height of 9 m with constant movement? - Gravitational 12411
We lift a weight of 2 kg to a height of 50 cm above the top of the table. Determine its gravitational potential energy: a) relative to the tabletop, b) relative to the floor if the table top is 1m above the floor. - Distance 8080
The driver covered the distance between the two cities in 2 hours at an average speed of 75 km/h. How does he have to change speed to get 20 minutes faster? - Projectile 4611
A projectile weighing m1 = 0.01 kg is fired at a velocity v1 = 800 m * s-1 from a rifle weighing m² = 4 kilograms. - Intersection 4214
The tractor drove through the crossroads at a speed of 36 km/h. Ten minutes later, a passenger car moved at 54 km/h. How long and at what distance from the intersection will the car run over the tractor?
- Osmium wire
A spiral of osmium wire has a resistance of 300 ohms at a temperature of 20 degrees Celsius. To what temperature was the coil heated if its resistance rose to 2940 ohms? (alpha=4*10-3 K-1) - The electric motor
The electric motor winding's copper wire (alpha=4*10-3 K-1) has a resistance of 42 ohms at a temperature of 18 degrees. What is its resistance at an operating temperature of 50 degrees? - Tandem jump
During the tandem jump, the paratroopers dropped from a height of 1.7 km to a height of 1.5 km above the surface in 4 seconds. At what average speed did they move before the parachute opened? - Light year
A light-year is a unit of length that expresses the distance light travels in one year. What distance will it travel if the speed of light is approximately 300,000 km/s? - Energy consumption
The device is connected to 230V and draws a 3.5A current. Power consumption is 1932kJ. How many minutes has this device been in operation?
- Car loop
The toy car runs at an average speed of 2 m/s. In a minute, it will pass the entire circuit five times. How long is the loop? - Avg speed of flight
The student's vice adventure had a 2,367 km flight. If their travel time was 2 hours and 56 minutes, what was their average speed in kilometers per hour? - Brakes of a car
For the brakes of a passenger car to be effective, it is prescribed that a car be moving on a horizontal road at a speed of 40 km. A car must stop on the track 15.4 m. What is the deceleration of the car? - Smaller 81015
Divide the content of the garden in the shape of a square S=153m² in a ratio of 2:7. What part of the garden does the smaller part occupy? - Saving at market shop
Mr. Akpalu went to a market to purchase 3 kg of sugar, 10 kg of wheat, and 1 kg of salt. In a shop near his residence, these commodities are priced at € 20, €10, and € 6 per kg, whereas in the local market, they are priced at € 15, 8, and € 6 per kg, resp
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