Compare and contrast the structure of the Earth and the Moon
What will be an ideal response?
Both objects have layers. Both have cores, mantles and crusts. The Earth's core is divided into two layers: inner (solid) and outer (molten) cores. The Earth has a hydrosphere, an atmosphere and a magnetosphere that the Moon lacks.
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An object that is 3.4 mm tall is placed 25 cm from the vertex of a convex spherical mirror. The radius of curvature of the mirror has magnitude 73 cm
(a) How far is the image from the vertex of the mirror? (b) What is the height of the image? What will be an ideal response?
Coal exploitation gives a better return on investment than other fossil fuels
What will be an ideal response?
A racecar goes around a 200 m radius curve at a constant speed of 40 m/s. Its acceleration is 8 m/s2
a. True b. False Indicate whether the statement is true or false
A string of length 2.5 m is fixed at both ends. When the string vibrates at a frequency of 85 Hz, a standing wave with five loops is formed. (a) Determine the distance between two adjacent nodes
(b) Determine the wavelength of the waves that travel on the string. (c) Determine the speed of traveling waves on this string. (d) Determine the fundamental frequency of this string.