Fundamentals of Physics - math word problems - page 25 of 50

Number of problems found: 985

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?
Stroller pushing distance
Mom did a 5 kJ job pushing the stroller. She always pushed him on the plane with a force of 50 N. How far did she push the stroller?
Crane work
The crane lifted a concrete block weighing 3 tons to a height of 500 cm. What work did it do?
Resident distance speed
Two of its inhabitants stand at one point in the land of two-dimensional beings. Suddenly, they both start running at the same moment. Resident A runs north at 5 m/s, and resident B runs east at 12 m/s. Calculate how fast they are moving away from each ot
Truck kinetic energy
A truck has a mass of 4.5 tonnes and is moving at a constant speed of 72 km/h. What is its kinetic energy?
Hydraulic - piston
The large piston of the hydraulic system has a capacity of 0.25 m² and a small 10 cm². How much force do we exert on the small piston to be lifted by 750 N?
Hydraulic blade force
The hydraulic blade has pistons with an area of 10 cm² and 500 cm². How much force acts on the larger piston if we act on the smaller piston with a force of 100 N?
Hydraulic jack
The small piston of the hydraulic jack has a capacity of 40 cm² and a large 120 cm². How heavy will a body lift when a man weighing 70 kg stands on a small piston?
Electric cooker
During which time does an electric cooker with power input P = 500 W and efficiency n = 75% heat water with mass m = 2 kg and temperature t1 = 10 °C to the boiling point (t2 = 100 °C)? The specific heat capacity of water is c = 4 180 J/kg/K.
Constant Angular Acceleration
The particle began to move from rest along a circle with a constant angular acceleration. After five cycles (n = 5), its angular velocity reached the value ω = 12 rad/s. Calculate the magnitude of the angular acceleration ε of this motion and the time int
Fly travel time
The fly flies at a speed of 8 km/h. How many minutes will it fly from one place to another, which is 1600 m away?
Hydraulic jack force
The hydraulic jack has pistons with a capacity of 6 cm² and 360 cm². How much force do we have to apply to the smaller piston to be able to lift a body weighing 180 kg on the larger piston?
Hydraulic press force
The hydraulic press has pistons with a capacity of 20 cm² and 800 cm². How much force acts on the larger piston if we work on the smaller piston with a force of 100 N?
Cellar pump drainage
The cellar, which has a floor area of 50 m² and is 3 m below ambient level, was flooded with water to a height of 80 cm. How long does it take for a pump with a power input of 1 kW and an efficiency of 75% (η = 0.75) to drain the water?
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?
Copper winding
Calculate the current flowing through the copper winding at an operating temperature of 70 °C Celsius if the winding diameter is 1.128 mm and the coiled length is 40 m. The winding is connected to 8 V.
Current in the conductor
Calculate the current in the conductor (in mA) if it is connected to a 4.5 V voltage source and its resistance is 20 (ohm).
Aluminum resistance temperature
The aluminum line has a resistance of 7.6 Ω at -10˚C. What will be its resistance at a temperature of + 50˚C?
A pressure
How much compressive force does an aquarium with a bottom area of 0.24 m² exert on the table when a pressure of 3 kPa is created?
Compressive force
The excavator's area of belts is 5 m², and it creates a pressure of 40 kPa. How much compressive force does the excavator exert on the road?

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