Fundamentals of Physics - practice problems - page 9 of 45
Number of problems found: 896
- Electrical 80549
The factory hall is lit by 76 light bulbs, each of which has an input of 200W. Determine how much electrical work will be saved annually if the light is on an average of 100 minutes less per day. Consider 260 business days. - Regulations 80545
The car is allowed to drive on the highway at a maximum speed of 130 km/h. What distance can he travel in 1.5 hours? Which is the furthest city that a driver can reach in 1 hour if he follows traffic regulations and drives from Prague on the highway to Br - Home is home At 65km/h, Alfred can reach home in 50 minutes. At what speed should he drive his car so that he can reach home 10 minutes earlier?
- Mechanical 80527
A stone with a mass of 2 kg falls in free fall from a tower with a height of 80 m. What is its kinetic energy, and what is its potential energy: a) At the beginning of the fall, b) In 1 s from the beginning of the fall, c) Upon impact, d) What is its mech
- Coefficient 80516
An aluminum wire has a resistance of 4.25 ohms at 0 degrees. Determine its resistance at a temperature of 200 degrees Celsius. The temperature coefficient of the electrical resistance of aluminum is 4.4·10-3K-1. - Coefficient 80515
A tractor pulls a tree trunk weighing 1.5 t for a distance of 2 km along a horizontal road at a constant speed. What mechanical work does it do if the coefficient of sliding friction is 0.6? - 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? - Resistivity 80483 The heating coil of the cooker has a resistance of 70.5 ohms and is made of a wire with a diameter of 0.30 mm and a length of 9.8 m. Determine the resistivity of the material from which it is made.
- Kilograms 80481
What is the weight of a sheet of glass 75 cm x 120 cm and 2 mm thick if one cubic meter of glass weighs 2500 kilograms?
- Representation 80447
On the school ski trip, the team set off from hut A at 9:30 a.m. to hut B at a speed of 2 m/s. Fifteen minutes later, the instructor followed them at a speed of 3 m/s. At what time and distance from cabin A will the instructor catch up with the team? Plea - To convert
To convert from a Celsius temperature to a Fahrenheit temperature, multiply the Celsius temperature by 9/5 and add 32. Which is the Fahrenheit temperature corresponding to - 30 degrees Celsius? - The temperature 37 The temperature was –5°C last night. It is increased to 8°C in the afternoon. What was the change in temperature?
- Cyclist's 80365
The cyclist covered a distance of 143 km in 5.5 hours. What was the cyclist's average speed? - Kilometers 80360
A subway train covers a distance of 1.4 km between two adjacent stations in 1 minute 40 seconds. What is her average speed? Give the result in kilometers per hour and meters per second.
- Resistances 80352
We connect a 9V battery, 2 light bulbs in parallel, and a switch to the circuit. When the switch is turned on, a current of 0.5 A passes through the first bulb and a current of 8 A through the unbranched part of the circuit. Draw the connection and calcul - Resistance 80351
We connected two resistors in parallel in the circuit, with the first having three times the resistance of the second. The voltage between the terminals of each resistor is 6 V. Calculate the current through each branch when the resulting resistance of bo - Distance 80348 A cyclist traveled 50 km in 2 hours. A car followed him from the same city and overtook the cyclist in an hour. At what speed was the car going, and at what distance did they meet?
- An archer
An archer stands 60 meters (m) from a target. She launches an arrow that lands 3 centimeters (cm) from the bull's eye. The archer changes her position to 40 m from the target, and her next arrow lands 2 cm from the bull's eye. She changes her position to - Minutes 80094
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?
A car travels 11,000 m in one minute. A motorcycle travels at a speed of 330 m in 11 seconds. Which of them will travel the greater distance in 1 hour of driving?Do you have homework that you need help solving? Ask a question, and we will try to solve it. Solving math problems.
