What is the frequency of the lowest harmonic that would be audible to the human ear? about 20 Hz What frequency range do humans hear best? People can hear sounds at frequencies from about 20 Hz to 20,000 Hz, though we hear sounds best from 1,000 Hz to 5,000 Hz, where human speech is centered. […]
Which of the following is a common technique advertisers use?
Which of the following is a common technique advertisers use? The correct answer is C. Advertisers regularly use the technique of selling fad diets to help people lose weight and get fitter by promoting the use of one or two food types. So for example you can only eat meat and vegetables but no carbs, […]
What are the most dangerous bases?
What are the most dangerous bases? Futenma is known as “the most dangerous base in the world” to the people of Okinawa. It was partially from former U.S. Secretary of Defense Donald Rumsfeld that it received this title, because after visiting the base in 2003, he noted that Futenma was an accident just waiting to […]
What is mechanical energy equal to?
What is mechanical energy equal to? An object’s ability to do work is measured by its mechanical energy, or the sum the object’s kinetic energy and potential energy. Mechanical energy is due to the position or movement of an object. The formula for mechanical energy is mechanical energy = kinetic energy + potential energy. How […]
How does speed and weight affect the amount of kinetic energy?
How does speed and weight affect the amount of kinetic energy? The kinetic energy of a moving object is directly proportional to its mass and directly proportional to the square of its velocity. This means that an object with twice the mass and equal speed will have twice the kinetic energy while an object with […]
What if Earth were twice as big?
What if Earth were twice as big? If Earth’s diameter were doubled to about 16,000 miles, the planet’s mass would increase eight times, and the force of gravity on the planet would be twice as strong. Life would be: Built and proportioned differently. Can we live on the sun? But if you take a look […]
Why are the two kinds of charge called positive and negative?
Why are the two kinds of charge called positive and negative? Positively charged: electrons are removed making the object electron deficient. Negatively charged: electrons are added giving the object an excess of electrons. Who invented positive and negative charge? Benjamin Franklin How many types of charges are there? two Which element has a charge of? […]
What is not an example of a machine?
What is not an example of a machine? Bridge is not a machine, it is a structure. A bridge is a structure built to span a physical obstacle, such as a body of water, valley, or road, without closing the way underneath. It is constructed for the purpose of providing passage over the obstacle, usually […]
Which of the following stimulates the release of ADH?
Which of the following stimulates the release of ADH? ADH is normally released by the pituitary in response to sensors that detect an increase in blood osmolality (number of dissolved particles in the blood) or decrease in blood volume. The kidneys respond to ADH by conserving water and producing urine that is more concentrated. Where […]
What are 3 things that cause weathering?
What are 3 things that cause weathering? Water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering. Once a rock has been broken down, a process called erosion transports the bits of rock and mineral away. No rock on Earth is hard enough to resist the forces of weathering and […]