Physical quantity - practice problems - page 2 of 289A physical quantity is a term numerically describing a property or state of a physical object. For example, a physical quantity is a length, and its corresponding physical unit is a meter (symbol m). Similarly, the quantity is weight, and the unit is the kilogram (kg). Physical quantities can be divided into a scalar (has magnitude), vector (has magnitude and direction), and tensor (has magnitude and multiple directions).
Number of problems found: 5774
- Dimensions 67784
Earthenware tiles have dimensions of 20 cm, 20 cm, and 2 cm. The package, in which there are ten pieces of tiles, weighs 20 kg. Determine the density of the stoneware from which the tiles are made.
- Density 67774
The prism, whose base is square / the side of the square is 20 cm / 30 cm high, is made of oak wood, and weighs 8.5 kg. What is the density of oak wood?
- Measuring 67014
The density of gold is 19200kg/m³. How much does a gold bar weigh 25cm, 8cm, and 37mm?
- Gravitational 63504
Due to the force of gravity, a freely released body falls towards the Earth. The reaction to the gravitational force is of equal magnitude and acts on the Earth at its center. Explain why we do not observe the motion of the Earth towards the body.
- Base conversion
122×14³ answer in base five
- Price discount
The original price of a pen is 9 1/5 dollars. Any purchase of 5 pens needs only 7/10 of the original price. To buy five pens, how many dollars should be spent?
- The temperature 20
The temperature is rising 4 degrees each hour and is currently 62 degrees. How many hours before the temperature are at least 80 degrees?
- Kilometer 58281
Write a fraction, which part: 1) kilometer is 31 m 2) minutes is 42 seconds 3) the day is 10 o'clock
- One Saturday
One Saturday evening there are 40 girls, 25 boys, 18 women and 17 men at a cinema. What fraction are girls?
The cost of admission to wonderland is 51.75. each bus we take costs 267.50 and holds 48 passengers. Suppose three classes of 27 and their teacher wanted to go. How much would they need to fundraise?
- Weight fraction
To prepare the brine, we need 1500 g of an aqueous salt solution with a weight fraction of 0.08. What salt weight and water volume do we need to prepare it?
- Mass fraction
Two teaspoons (24 g) of sugar are dissolved in a cup with 500 g of tea. Calculate the weight fraction of sugar in the tea.
- Jack decides
Jack decides to hire a car. The cost 45+20D is dollars, where is the number of days Jack hires the car for. If Jack hires the car for four days, what will it cost? Dollars
Sometimes Grace has kittens. Each kitten has 1/3 as much cat food as a full-grown cat. How many kittens can Grace feed with the 1.47 pounds? Solve on paper. Then check your work. One full-grown cat needs 0.25 pounds of food.
Shaina baked a cake for 0.380 hours and noticed it was still undercooked. So she planned to put another batter in the oven and double the timer. How many hours will she put in the timer?
- Electric wire
William has a piece of wire that measures 1 yard long. He will use wire to fix several electrical outlets in his house. How many inches long is the wire? Solve this problem using bar diagrams.
In a braking test, a vehicle that travels at 51 km/h stops in 5 s. What is its acceleration?
- Unoccupied 42171
Pavel dug in the morning, 1/5 of the garden in the afternoon, and then 1/2 of the unoccupied part. What part of the garden remained unopened?
Amos gets $2400 a month for his salary. He spends $1000 on rent. What fraction of his rent is leftover?
There is 67 m³ of oil in the tank. What is its weight? The density of the oil is 910 kg/m³.