Category: Physics

How old is South Africa? Independence: 31 May 1910 (from UK); South Africa became a republic in 1961. Geography: Location: Southern Africa, at the southern tip of the African continent. Area: 1.2 million km² (470,462 sq. Who runs Africa? Cyril Ramaphosa His Excellency Cyril Ramaphosa Succeeded by Felix Tshisekedi 14th President of the African National […]

Why is civic mind important? The importance of civic responsibility is paramount to the success of democracy and philanthropy. By engaging in civic responsibility, citizens ensure and uphold certain democratic values written in the founding documents. Civic Responsibility is defined as the “responsibility of a citizen” (Dictionary.com). What do good citizens do? Conduct a classroom […]

Can I put a 40W bulb in a 60W socket? Yes you can, the light output will be 33% less but then you will use less energy. light fittings should be labelled to state the maximum safe wattage bulb which can be fitted. Never under any circumstances exceed the maximum but lower is fine. How […]

What are the four factors that affect the strength of an electromagnet? Factors Affecting the Strength of the Magnetic Field of an Electromagnet: Factors that affect the strength of electromagnets are the nature of the core material, strength of the current passing through the core, the number of turns of wire on the core and […]

What is the force of gravity on a 500 Newton woman? What is the force of gravity on a 500-newton woman standing on the Earth’s surface? Reasoning: A 500-N woman is acted upon by a force of 500 N from the earth. This is precisely the weight of the person. What is the force of […]

What is the product of KCl I2? ; Greenish-yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.]…Search by reactants (KI, Cl 2) 1 Cl2 + KI → I2 + KCl 2 H2O + Cl2 + KI → HCl + KIO3 3 Cl2 + KOH + KI → H2O + KCl […]

Can I turn my iPhone into a megaphone? Megaphone instantly transforms your iPhone or iPad into a microphone when you connect it to external speakers. With crystal-clear sound and easy setup, you can make yourself heard in minutes. If you’re using wireless speakers, upgrade to Megaphone Pro and pair your iPhone or iPad with your […]

How do you find the velocity of an object? Velocity (v) is a vector quantity that measures displacement (or change in position, Δs) over the change in time (Δt), represented by the equation v = Δs/Δt. Speed (or rate, r) is a scalar quantity that measures the distance traveled (d) over the change in time […]

What is another name for energy in motion? Motion energy – also known as mechanical energy – is the energy stored in moving objects. As the object moves faster, more energy is stored. Motion energy is the sum of potential and kinetic energy in an object that is used to do work. How energy is […]

Does a capacitor drain a battery? In steady state (after a long time) an ideal capacitor does not draw significant current from a battery. A real capacitor will draw some small leakage current. The amount of leakage current will depend on the type of the capacitor, electrolytics will have higher leakage than films and ceramics. […]