Fundamentals of Physics - math word problems - page 39 of 48
Number of problems found: 953
- Bulb
A 60 W bulb consumes 0.12 kWh of electricity. How long did she stand light without a break? - The appliance
The appliance has a power input of 2.3 kW. It is connected to the mains voltage of 230 V. What is the current flowing through the appliance? - Train Speeds Comparison
The expressway covers the distance from the starting point to the final station in 4 hours and 20 minutes. A passenger train, whose average speed is 30 km/h less, will cover this distance in 7 h 40 min. What is the speed of the express train, and what is - MW oven
You plug a microwave oven into a 20 amp electrical circuit. The microwave uses as much as 12.5 amps. How many amps are available on this circuit for other appliances? - Plane Chase Time
A Boeing plane took off from the airport and flew at a speed of 900 km/h. When it had flown 600 km, a fighter plane was sent after it from the same airport, which flew at a speed of 2100 km/h. Calculate how long it took him to catch up. - Wheel Rotations at Speed
The diameter of the wheel is 56cm. How often does it turn in 5 minutes if traveling at 60km/h? - Railroad The railroad runs parallel to the railway. The train travels at 36 km/h on track. In the opposite direction, the motorcycle rides at 90 km/h. The train passes in 3 seconds. How long is a train?
- Filament of bulb
The bulb's filament has a 1-ohm resistivity and is connected to a voltage of 220 V. How much electric charge will pass through the fiber when the electric current passes for 10 seconds? - Electric current calculation
Calculate how much electric current flows through the circuit if a 3 C (C is SI unit - Coulombs) electric charge passes through the conductor cross-section in 30 seconds. - Bulb Current Resistance Calculation
The bulb is connected to a 4.5 V power supply. An electric current of 45 mA flows through the filament of the bulb. The calculated size of the electrical field of the filament lamp - Electrical Voltage Calculation
A resistor with an electrical resistance of 1.5 kiloohms passes through an electrical current of 0.1 amps. Calculate the electrical voltage between the resistor terminals - Coil as a girl
The electrical resistance of the copper wire coil is 2.0 ohms. What current runs through the coil when the voltage between the terminals is 3.0 V? - Coulombs How long does it take for a 15 C charge to cross the conductor's cross-section if a 3mA current passes through the conductor?
- Resistance of the resistor The resistor terminals have a voltage of 20 V, and a current of 5 mA is passed through. What is the resistance of the resistor?
- Electric Kettle Current
The kettle is connected to a voltage of 230 V. Its resistance is 130 ohms. What is the current flowing through the kettle? - Toboggan run
The length of the toboggan run is 60 m, and the height is 8 m. The boy pulls a sled weighing 15 kg. How hard does the boy pull the sled uphill? - A steel
A steel hammer with a weight of 0.5 kg hits the nail at a speed of 3 m/s. How deep does the nail penetrate the wood if the hammer acts on the nail with an average force of 50N? - Rollerblade
Martin rollerbladed 1 km per minute. What distance would he cover at the same speed in 3 3/4 hours? - Kinetic Energy Braking Force
Janko is skating at a speed of 18 km/h. Its kinetic energy is 0.5 kJ. Janko weighs 40 kg. Calculate: 1. what work will the braking forces do before Janko stops? 2. How big is the braking force when Janko stops after crossing a track of 14 m.? - Speed increase
The tourist travels at an average speed of 3.5 km/h. The last train takes him 50 minutes. If he still has 5 km to go to the station, how much does he have to increase his speed?
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