You can buy an expensive frying pan that is made of copper but has a handle made of stainless steel. Why are different metals used for the part of the pan that touches the stove and for the part that touches your hand?

Q: A bucket of water is hung from a spring balance. A piece of iron is suspended in the water without…

A: When the piece of iron is lowered into the water, the water level in the bucket increases. And so…

Q: You press a stick that has a varying cross-sectional area horizontally between the palms of your…

A: The pressure can be given as, Here, F and A represent the force, and the area, respectively. Let…

Q: What are two effects that adding heat can have on a solid object?

A: The below are the two effects

Q: A basketball is very different from A fire. What are some difference that might make a basketball…

A: All matter In the world , including basketballs and water, shares two properties. A matter is define…

Q: You have discovered a new type of ice with zero friction. Your skating will: Select one: O a. Not…

A:

Q: Why mercury collects itself into drops when placed on a clean glass plate?

A: Cohesion is the property of like molecules to stick to each other due to mutual attraction. Adhesion…

Q: A stone floor feels cold to the bare feet but a carpet on the same floor feels warm. This is because…

A: When two objects of different temperature are in contact with each other, then the heat energy will…

Q: The state of equilibrium or no motion. a. kinetic b. static c. frozen d. a & b e. b & c In a mass of…

A: Kinetic is related to motion of an object it may accelerating.  So option a is incorrect Static…

Q: In which state do particles move faster and with little effect on each other? Ice, gas, liquid, or…

A: The interaction between the particles of a substance will increase when the distance between them…

Q: There are three containers of different shapes with the same base area. Which has a) lightest. b)…

A:

Q: A metallic rod rotates about its center at a constant angular speed. If the rod's temperature is…

A: Given Initially a rod is rotating about its centre at a constant angular speed. It is now heated We…

Q: You observe two helium balloons floating next to each other at the ends of strings secured to a…

A: When you blow through the small space between the helium balloons , they will move toward each other…

Q: The sparks from a sparkler have a temperature of around 2000°C. Why do they not bun your hand when…

A: The thermal energy of  object depends on its temperature, mass and type of material.

Q: Consider a fish swimming 5 m below the free surface of water. The increase in the pressure exerted…

A:

Q: Touching a hot fire poker with your hand is an example of:

A: If you touching a hot fire poker with your hand ,heat will conducted to your hand and your skin will…

Q: How would you throw an egg without breaking it? A. Boil the egg B. Throw it against a net C. Throw…

A: How would you throw an egg without breaking it? A. Boil the egg B. Throw it against a net C. Throw…

Q: If a glass of water is on a table with a piece of paper under it, it is relatively easy to pull the…

A: to explain : If a glass of water is on a table with a piece of paper under it, it is relatively easy…

Q: You have been warned to  set up a ladder with its base about 1/4 of its length from the wall.…

A: Let us draw an an illustration of the given scenario:

Q: Explain why when we try to close a water tap with our fingers, fast jets of water gush through the…

A: Equation of continuity says that,

Q: To weigh a fish, a seaman hangs a tackle box of mass 3.5kg and a cooler of mass 5kg from the end of…

A: Write the given values of the problem- Mass of the tackle box=3.5 kg cooler of mass=5 kg

Q: 2. You could do this if you wanted to increase friction between two objects: A. Sand the surfaces…

A: 2. More the roughness on the surface more the friction because interlocking will be that much…

Q: What is the chief advantage of a modular spacesuit like the one used by NASA on the Shuttle and the…

A:

Q: A 0.5 kg ice cube at 0℃ is placed in 1 kg of water at 35℃ in a very well – insulated container with…

A:

Q: A swimming pool has a measurement of 50 m by 25 m and 2.5 m. The pool is filled with water, what is…

A: Given   Not given anything about atmospheric pressure, so consider force only due to water.…

Q: Consider the following two scenarios. Do these objects have the same amount of internal energy? If…

A: Heat always flows from hotter objects (or higher temperatures) to cooler objects (or lower…

Q: tank with 43.2kg of water is leaking at a rate of 0.0135 kg/s. how many hours will it take until the…

A:

Q: If you place a candle directly in front of a large speaker that is playing music, what do you expect…

A: Sound is a longitudinal wave,when sound wave release,its frequency also release from the speaker and…

Q: Skating on ice is possible because    A) the surface of ice is smooth B) ice is cold C) the pressure…

A: Skating on ice is possible because of Regelation. Regelation is the process of melting ice under…

Q: Why is it advisable to allow telephone wires to sag when stringing them between poles in summer?

A: Why is it advisable to allow telephone wires to sag when stringing them between poles in summer?

Q: A jet of diesel with relative density 0.8 strikes normally a plate with a velocity of 12 m/s. The…

A: When a fluid of density "ρ", speed "v" and cross section area "A" hits normally to an object then…

Q: The force of friction between two surfaces will increase if:   A) a layer of lubricant is kept…

A: Introduction: Frictional force is defined as the resistive force when there is relative motion…

Q: Crawling in a frozen lake decreases the chance of breaking the ice rather than walking on it. Which…

A: The pressure is defined as the thrust acting per unit area.

Q: The molecules in a room-temperature glass of water jostle around at   Question 7 options:   a great…

A: The motion of the particles in a solution is rapid and zig-zag.

Q: When you blow some air above a paper strip, the paper rises. This is because? (choose one)   1.…

A: Answer: 2. The air above the paper moves faster and pressure is lower

Q: It is difficult to walk on sand or ice. Why?

A: It's difficult to walk on ice because there's very little friction between the bottoms of your shoes…

Q: Why are metal-spiked shoes not a good idea for golfers on a stormy day?

A: Lightning has a tendency to hit tallest object easily, in the case of golf field the tree are less…

Q: If Gary rests his hand on a book, it will be much more comfortable for him than if he rests his hand…

A: Hai, since there are multiple questions posted, we will answer the first question. When Gary rests…

Q: The casing of a rocket in flight burns up due to friction. At whose expense is the heat energy…

A: The casing of a rocket in flight burns up due to friction. Heat energy required for burning of…

Q: Two metal spheres are made of the same material and have the same diameter, but one is solid and the…

A:

Q: A metal soap dish barely floats in water. A bar of Ivory soap floats in water. When the soap is…

A:

Q: When an electric bulb breaks , there is an explosive sound. That is due to   A) the chemical…

A: option C) is correct  That is due to  the air outside rushing in to fill the vacuum inside the bulb…