Problem 1
Metal bars, not cables, are used to tow stuck cars. Why?
Problem 2
In the 50 meter race, you cannot stop suddenly. Why? Explain.
Problem 3
Sometimes, in equestrian competitions, in the steeplechase, the horse suddenly stops in front of a fence that constitutes an obstacle. What's up with the jockey?
Problem 4
In the African savannah, an antelope pursued by a prey animal is always changing its direction of movement. How does her chance of survival change compared to a zebra that does not change direction while running?
Problem 5
The tankers used for the transport of liquids are closed and have interior partitions. Explain why these safety measures are necessary.
Problem 6
In some situations, luggage placed on the luggage rack in a train can fall. Identify what these situations are and explain why luggage falls.
Problem 7
What is the maximum mass that can be measured using the marked mass box in the physics lab?
Problem 8
A basketball and a tennis ball travel at the same speed. Which one is easier to stop?
Problem 9
To make a cake, you need an exact amount of sugar. How can you take 250 grams of sugar from a bag of sugar with a mass of 1 kilogram using only a balance with equal arms, without having standard masses available?
Problem 10
Two bodies have equal masses. One is iron, the other glass. Which one has the bigger volume?
Problem 11
Calculate the volume of a homogeneous cube with mass m = 84 g, made of silver, pAg = 10.5 g/cm3
Problem 12
A cube with a side of 10 centimeters has a void inside with a volume of 400 cm3. Knowing the density of the material from which the cube is made, p = 2.5 g/cm3, calculate the mass of the cube.
Problem 13
A glass cup with density p = 2.5 g/cm3 has mass m = 400 g. How much will a silver cup with the same volume as the glass weigh?
Problem 14
Two metals with densities p1 = 10.4 g/cm3 and p2 = 19.3 g/cm3 are melted and mixed. Knowing the masses of the two metals, m1 = 52 g and m2 = 193 g respectively, calculate the density of the alloy obtained.
Problem 15
An iron cube, pFe= 7.8 g/cm3, has side l = 10 cm. What mass of silver, pAg = 10.4 g/cm3, is required to uniformly cover this cube with a silver layer of thickness = 0.5 mm?
Over 150 problems with solutions, 6th grade Physics - formuleonline.blogspot.com/20...
23 янв 2024
