Category: Physics

What is the lowland between hills or mountains called? A valley is a lower part in the land, between two higher parts which might be hills or mountains. Valleys often start as a downward fold between two upward folds in the surface of the Earth, and sometimes as a rift valley. What’s the difference between […]

How do you calculate km h? Speed is distance divided by time. Simply put, if you drove 60 kilometres for one hour, it would look like this: Speed = distance (60 km) / time (1 hour) = 60km/h. How long does it take to walk 5km? 45 minutes Will I lose weight if I run […]

What does baseball mean to Dominicans? pelota What percent of the MLB is Dominican? Close to 400 recent major-league players, or almost 40 percent of all foreign players, come from the Dominican Republic….In this article. Country of birth Dominican Republic No. of players since 2000 395 Share of all foreign players 39.1% Share of all […]

What is the relation between force and mass? A: Force is mass times acceleration, or F= m x a. This means an object with a larger mass needs a stronger force to be moved along at the same acceleration as an object with a small mass. This is Newton’s Second Law of Motion. What will […]

What is limitation of model? Models are used to simulate reality and make predictions. The major limitation of models is that they are ‘idealizations’ or ‘simplification’ of reality and thus cannot possibly replace reality. A number of assumptions are made during modeling and this causes differences between model and reality. What are some model limitations? […]

What is true for living organism? All living things are made of cells, use energy, respond to stimuli, grow and reproduce, and maintain homeostasis. All living things consist of one or more cells. All life processes require energy, so all living things need energy. All living things can sense and respond to stimuli in their […]

How does a human presence sensor work? Sensors Powering Human Presence Detection Ambient light sensors: As the name suggests, these sensors detect light in the environment. They can measure the light reflecting from an approaching user to detect human presence from a distance. How does a presence sensor work? Presence sensors/motion sensors actually detect the […]

What is the Hydra in real life? It is suggestively based on the British Aerospace Harrier II (formerly known as the Hawker Siddley Harrier) a well-known British fighter jet with Vertical Takeoff and Landing (VTOL) capabilities, with minor detailing from the F-16 Fighting Falcon, such as the cockpit and air intake. Is the Hydra faster […]

Can you table a motion? In both houses of the United States Congress, the motion to table is used to kill a motion without debate or a vote on the merits of the resolution. The rules do not provide for taking the motion from the table, and therefore consideration of the motion may be resumed […]

Where does friction act on a wheel? The friction force acts in the forward direction on the rear wheel and it acts in the backward direction on the front wheel. The magnitude of friction force on the rear wheel can be more, equal or less than that on the front wheel. How does friction affect […]