When the applied magnetic field on a ferromagnetic material is reduced to 0 after saturation, the intensity of magnetization is equal to
(a) 0.
(b) The saturation magnetization.
(c) The remanent magnetization.
(d) The coercive field.
(c) The remanent magnetization.
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Isotopes of the same element have the same number of protons
a. True b. False Indicate whether the statement is true or false
Satellite Motion: The International Space Station is orbiting at an altitude of about 370 km above the earth's surface. The mass of the earth is 5.97 × 1024 kg, the radius of the earth is 6.38 × 106 m, and G = 6.67 × 10-11 N ? m2/kg2. Assume a circular orbit.(a) What is the period of the International Space Station's orbit?(b) What is the speed of the International Space Station in its orbit?
What will be an ideal response?
How is the sunspot cycle directly relevant to us here on Earth?
A) The sunspot cycle strongly influences Earth's weather. B) The Sun's magnetic field, which plays a major role in the sunspot cycle, affects compass needles that we use on Earth. C) The brightening and darkening of the Sun that occurs during the sunspot cycle affects plant photosynthesis here on Earth. D) Coronal mass ejections and other activity associated with the sunspot cycle can disrupt radio communications and knock out sensitive electronic equipment. E) The sunspot cycle is the cause of global warming.
How much heat must be removed from 456 g of water at 25.0°C to change it into ice at -10.0°C? The specific heat of ice is 2090 J/(kg?K) and the latent heat of fusion of water is 33.5 × 104 J/kg
A) 105 kJ B) 153 kJ C) 57.3 kJ D) 47.7 kJ E) 210 kJ