Academic Questions & Answers Forum. Shreya is dutiful, friendly with scientific aptitude. (a) electrostatic force Yes, it is true. Arrange them in order of decreasing pressure at the base of each vessel. Aug 12, 2015. The more gas dissolved in the water, the greater the pressure it exerts. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. Answer: Question: A fisherman with a mass of 75kg falls asleep on his four-legged chair of mass 5 kg. Will he come down with the same speed without the parachute? (d) non-contact force, Question 9. Gravitational force: The attractive force of the earth which acts upon all the objects is known as the force of gravity or just gravity. ... the air pressure above the paper reduces. The atmosphere exerts pressure on the surface of the earth. When they are released, name the force which might be responsible for this phenomenon. The pressure which is exerted by air around us is known as Gently remove the hand pressing the card. This shows that the air inside exerts pressure on the walls of the balloon. Explain. Question 8. (b) mass (a) weight Magnetic force is larger than the force of gravity. The molecules in the air located above us are pulled down towards the Earth by gravity, causing a downward pressure on objects below. What are the two states of motion? True (b) ... Pressure test questions. We can calculate the pressure by substituting the values for force and area into the formula as follows: \text{ Pressure } = 440 N \div \, 64 m ^2 = 6.875 N/m ^2 . But we do not experience its effect why? Answer: ... Activity to show liquid exerts pressure on walls of container also on the side of container. What force is exerted on this book when it is sitting flat on a desk? All the liquids exert pressure on the base or bottom and walls of their container.All the liquid have weight. 4. Answer: 4. atmosphere 10. 9. (d) (c) maximum in position B 1. 1. Students will listen and respond to a nonfiction book. 5. push, pull Hold the tumbler with one hand while keeping the card pressed to its mouth with your other hand. Liquid exerts pressure in all directions. Name the force exerted on a ball of dough to make a flat chapati. Does the card get detached allowing the water to spill? Question 3. (c) But if the force applied in the direction opposite to the motion, then it decreases the speed of the object. Barometer. Force can act on a body from a distance or by being in contact with it. Answer: They will learn that the upward pressure that air exerts increases with the size of the surface area of an object and the movement of air beneath the object. The weight of the air acting on a unit surface area is called the atmospheric pressure. 7. Force changes the (b) gravitational force Make sure that the tumbler is held vertical. Answer: Air exerts pressure in different ways under different situations. Question 2. 17. Electrostatic force: The force exerted by a charged body on another charged or uncharged 1 body is known as electrostatic force. 10. The movement of gasses between the air and the water stops when these two pressures are equal. If the force is very big, it can give a bad impact to the surrounding area. Now pour water in any one of the bottles. (b) Magnetic force Name the initial force that sets the arrow in motion. 7. The pressure the atmosphere exerts onto the Earth's surfaces. Question 1. Wind blowing in high speed may break or displace many things. Magnetic force is a non-contact force. Answer: (a) non-contact forces (i), IV. Frictional force: The force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. Answer: Question 3. At least how many objects are needed to apply a force? Hence, like every other matter, they also occupy space. What is the name of the instrument used to measure atmospheric pressure? 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