Fundamentals of Physics - practice for 12 year olds - page 10 of 13
Number of problems found: 242
- Copper density
The copper roller weighs 547.4 g. determine its volume. Use copper density is ρ = 8960 kg/m³. - Material 5296
What material is the casting that weighs 45.2 g and has a volume of 4 cm³? If it is a simple chemical element, write its chemical symbol. - Inter city bus
The inter-city bus leaves Suva at 10.00 am and reaches Nadi at 1.00 pm, covering a distance of 219km. How long did it take to reach Nadi? - Force meter
We put the statuette on the force meter. The force meter showed a value of 25 N. Then we placed the statuette on the force meter, completely immersed in the water. The force meter showed a value of 17 N. What is the volume of the statuette?
- The tram
The tram is moving with acceleration a = 0.3m/s2. How long will it pass the first meter of the track? How long does it take 10 meters? What is its speed at the end of the 10 meters track? - Runners 4857
Two runners run on a 3200m oval track, one running at 12 km/h and the other at 8 km/h. How long does it take for the first runner to finish the second one? - Megapascals
What is the area of cross-section of the piston if the force of 300 kN produces a pressure of 5 MPa? - Gasoline
How many liters of gas is in the tank if its weight is 15.4kg? The specific density of gasoline is 770kg/m³. - Time clock
What are the angle of the hour hand and the minute hand if it is 0:40?
- Wood lumber
Wooden lumber is 4 m long and has a cross-section square with a side of 15 cm. Calculate: a) the volume of lumber b) the weight of the lumber if 1 m³ weighs 790 kg - Letohrad 4396
On a map at a scale of 1:400,000, the distance between Letohrad and Prague is 4.5 cm. What speed does Dad have to go to be in Prague at 9 o'clock when he leaves at 6 o'clock, 40 minutes? - Kilometers 4391
The car moved out of place at a speed of 60 km / h in 1.5 hours. The second car moved at a speed of 80 km / h. How long will it take to catch the first car, and how many kilometers will it drive? - Simultaneously 4390
It is 162 km from Nitra to Brezno. Two cars on the same route will leave both places simultaneously. A vehicle from Nitra travels at a speed of 60 km/h, and a car from Brezno travels at a speed of 75 km/h. How long and at what distance from Nitra will the - Motorcycle 4373
A truck that is 6 m long travels at a speed of 66 km/h. A motorcycle traveling at a speed of 20 m/s overtakes him. Overtaking starts 16 m behind the car and ends 18 m in front of the car. How long does this overtaking last, and what track does the motorcy
- Simultaneously 4369
Cars from two cities, A and B, 90 km apart, drove towards each other simultaneously. The car from city A had a constant speed of 72 km/h, and the car from city B had a speed of 90 km/h. How long and how far from city B will they meet? - Mushrooms
Fresh mushrooms contain 90% water, dried only 12%. How many kilograms of fresh mushrooms are needed for 5kg dried? - Consumption 4345
The locomotive consumes 22 kg of coal when climbing. It consumes 10 kg when descending and driving on a flat surface. The line is 62 km long, and coal consumption on this line was 800 kg. How many km of the climb was there on the track? - Granddaughter 4237
Mrs. Helena has an old cell phone with nothing to do but makes phone calls. The cell phone will discharge in 72 hours when fully charged and on the phone. Three hours of calling in a row are enough to discharge a fully charged phone. After the last full c - Average speed
The plane from Prague to Warsaw flies 540 km in 1 hour and 12 minutes. Find the average speed.
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