Explanation A pulley system is commonly used to raise and lower flags. As it allows for a change in direction of the force and makes it easier to lift the flag to a higher position. Explanation A pulley is a simple machine that uses grooved wheels and a rope to raise, lower, or move a load. It changes the direction of the force, making it easier to lift or move heavy loads. Examples : Raising a load and A flag pulley. Explanation A lever is a stiff bar that rests on a support called a fulcrum, which lifts or moves loads. The fulcrum is the point where the lever pivots , and it can be used to change the direction of a force or to gain a mechanical advantage, making it easier to lift or move heavy loads. Examples : Hammer, crow bar, a pair of pilers and seesaw. Explanation Lever, pulley, wedge, wheel, inclined plane, and screw are examples of simple machines. These are basic machines that change the direction or magnitude of a force, making it easier to lift, move, or apply force to an object. There are six types of simple machines : Inclined Plane Lever Wheel and Axle Pulley Wedge Screw Explanation The correct answer is: Simple machines magnify the force you use. This statement is true for many simple machines, such as levers, pulleys, and wheel and axle systems. Which are designed to multiply the force you apply, making it easier to lift, move, or apply force to an object. Explanation To find the speed, we can use the formula : Speed = Distance / Time Given: Distance = 150 meters Time = 5 seconds Speed = 150 / 5 Speed = 30 m/s So, the cycling speed of the girl is 30 meters per second. Explanation Force is the only option that can change an object's speed. According to Newton's second law of motion , force is directly related to an object's acceleration, which is the change in speed over time. Explanation Force cannot change the content of an object , as it only affects the object's motion, shape, and position, but not its composition or internal structure. Explanation Laboratory thermometers typically have a lower temperature range than clinical thermometers, and are designed to measure temperatures in a laboratory setting. The lowest temperature in a laboratory thermometer is often around -10°C or even lower , depending on the specific thermometer. Explanation When handling a clinical thermometer, you should: Wash it before use (to ensure cleanliness and accuracy) Stay at one place (to avoid moving around and potentially breaking the thermometer) Place it in a cover after use (to protect the thermometer from damage and contamination) But you should not Run while handling a clinical thermometer, as this could cause the thermometer to break or become damaged.

Explanation The full idiom is " Cross your bridges when you come to them ", Meaning you should deal with problems only when the y arise, not worry about them beforehand

Explanation From the given sequence, we see that the pattern followed is: 3 + 1 = 4 4 + 2 = 6 6 + 3 =  9 + 4 = 13 13 + 5 = 18

Explanation With the vial set inside the fly box, all the flies could be put to sleep within seconds " Set" is the correct past participle ( not " settled") for passive construction. " Flies" is the correct plural of " fly." " Could be put to sleep" is the correct passive form. " Within seconds" is correct and natural English.

Explanation Broth (Also Soup)

Explanation Nando's originated in South Africa in 1987 . The first restaurant opened in Rosettenville, Johannesburg.  Fernando Duarte and his friend Robert Brozin, the f ounders of the first Nando's, He bought a restaurant previously called "Chickenland" and renamed it Nando's. The chain's story began hundreds of years ago when Portuguese explorers discovered the African Bird's Eye Chilli, also known as PERi-PERi.

Explanation A caucus is a meeting of supporters or members of a specific political party or movement. The exact definition varies between different countries and political cultures.

Explanation Using the formula for Required arithmetic mean  = number of terms sum of the terms ​ After substituting the values we get = 5 2 + 4 + 6 + 8 + 1 0 ​ = 5 3 0 ​ = 6

Explanation Ahmad Shah Massoud, a legendary resistance commander, received CIA funding under Reagan and subsequent U.S. administrations, as his militia ousted the Soviets from Kabul and later led the opposition to the Taliban. Massoud was assassinated by Al Qaeda operatives two days before the 9/11 attacks

Explanation Grigori Yefimovich Rasputin was a Russian mystic  He was born in the Russian Empire  in Pokrovskoye, Siberia in 1869. He became influential at the court of Tsar Nicholas II and Empress Alexandra.   He was known for improving the condition of Aleksey Nikolayevich, the hemophiliac heir to the Russian throne.  He was assassinated by a group of noblemen, including Prince Felix Yusupov  in 1916 in Petrograd (now St. Petersburg). He was poisoned, shot, and thrown into the Neva River.