Category: Physics

How do you know if an object has a positive or negative charge? An electrical charge is created when electrons are transferred to or removed from an object. Because electrons have a negative charge, when they are added to an object, it becomes negatively charged. When electrons are removed from an object, it becomes positively […]

What muffles sound the best? The best types of surfaces for absorbing sounds are ones with jagged surfaces and hollow recesses within (much like a sponge or cardboard). The proper object captures the sound waves and bounces them around within the object until the vibrations dwindle. Does Styrofoam deaden sound? Polystyrene foams such as Styrofoam […]

What do we call a ramp and ladder combined? A wedge is a simple machine that is made of two inclined planes together. Inclined planes don’t move, but wedges do. An axe is an example of a wedge. Inclined planes are simple machines used to make work easier. Ramps, ladders, and staircases are all inclined […]

How is food transported in plants explain Class 10? The phloem tissue in plants transports food materials from the leaves to different parts of the plant. As a result, the osmotic pressure in the tissue increases forcing the water to move through it. This pressure moves the materials in phloem to the tissues which have […]

How many pounds of nitrogen per acre are needed for corn? 250 pounds How much nitrogen do you put in a hay field? “Apply 50 to 60 pounds per acre of nitrogen on your best grass stands and 30 to 40 pounds per acre on the rest,” he recommends. Thomas suggests a similar amount of […]

What are three factors that affect the flow of current in a circuit? Answer. Answer: Voltage, resistance, and whether the circuit is wired in series or parallel. The current in a circuit depends on the applied voltage and the resistance of the circuit. Why do we say current flows from positive to negative? The direction […]

What is CP and CV for water? Specific heat is the energy required to raise the temperature of a unit mass of a substance by one degree. In thermodynamics, there are two kinds of specific heats: Cv (specific heat at constant volume) and Cp (specific heat at constant pressure). What is CP and CV? The […]

Is hail a solid or liquid? Hail actually falls as a solid. Hailstones are formed by layers of water attaching and freezing in a large cloud. A frozen droplet begins to fall from a cloud during a storm, but is pushed back up into the cloud by a strong updraft of wind. When the hailstone […]

When a device is used in a circuit in which the voltage is 81V? When a device is used in circuit in which the voltage is 81V , current flowing the device is 3A . The resistance is 27 ohm. V = IR ; 81 = 3 R ; R = 81/ 3 = 27. […]

How do you enter a different state of consciousness? Altered states of consciousness may also be induced by: Hypnosis. Meditation. Spiritual experience. Learning. Insight. Understanding. Emotional development. Sensitivity training. What is a normal state of consciousness? Definition. The normal state of consciousness comprises either the state of wakefulness, awareness, or alertness in which most human […]