# Fundamentals of Physics + unit conversion - math problems

#### Number of problems found: 85

• Motor physics Car traveling at 130 km/h on the highway. Pulling power of the motor is 8 kN. Determine engine power in kW.
• Gold horseshoe Calculate the volume of a gold horseshoe that weighs 750g.
• Bulb A 60 W bulb consumes 0.12 kWh of electricity. How long did she stand light without a break?
• RPM An electric motor makes 3,000 revolutions per minutes. How many degrees does it rotate in one second?
• Decibel By what percentage does the sound intensity increase if the sound intensity level increases by 1 dB?
• 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?
• Time clock What is the angle of the hour hand and the minute hand, if it is 0:40?
• Resistance Determine the resistance of the bulb with the current 200 mA and is in a regular lamp (230V).
• 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?
• The resistance What is the resistance of an aluminum wire 0.2 km long and 10 mm in diameter?
• Cooker A current of 2A passes through the immersion cooker at a voltage of 230V. What work do the electric field forces in 2 minutes?
• Clock Tower What angle is betwenn hands on Clock Tower when show 17 hours and 35 minutes?
• Weight The kilogram weight has a volume of 116 ml. From which material is it probably made? Use substance density tables, e. G. mathematical-physical-chemical tables.
• 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).
• Diver Please calculate using Pascal's law. The window of the diving helmet has a surface content of about 7dm2. Calculate what pressure force acts on the window at a depth of 20 meters below the water surface.
• Sand How much m ^ 3 of sand can be loaded on a car with a load capacity of 5 t? The sand density is 1600 kg/m3 .
• Car At what horizontal distance reaches the car weight m = 753 kg speed v = 74 km/h when the car engine develops a tensile force F = 3061 N. (Neglect resistance of the environment.)
• Harmonic oscillator Calculate the total energy of a body performing a harmonic oscillating motion if its mass is 200 g, the amplitude of the deflection is 2 cm and the frequency is 5 Hz. Round the result to 3 decimal places.
• Iron cast What is the weight of cast iron with a volume of 3575 cubic centimeters? The density of the cast iron is 7600 kg/m3
• Friction coefficient What is the weight of a car when it moves on a horizontal road at a speed of v = 50 km/h at engine power P = 7 kW? The friction coefficient is 0.07

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Fundamentals of Physics - math word problems. Unit conversion - math word problems.