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A: mass of particle (m) = 6 kg velocity = -3i^ + 4j^ units R = 5i^ + 6j^ units
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Q: ples of
A: Gay Lussac's law
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A sine wave has a maximum value of 312 volts. What is its instantaneous value at an angle displacement of 550?
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- Distances in space are often quoted in units of light years, the distance light travels in one year. The most distant galaxy yet discovered is 12.0 × 109 light years away. How far is this in meters?dl L = U- RI dt Solve this equation for I(t) with I(0) =lo. What is I(t) as t approaches infinity?The intensity of electromagnetic energy from the Sun reaching the Earth is 1,390 W/m?. Earth is about 1.5 x 1011 m from the Sun and Saturn is about 10 times further, how much power would a 1.00 m2 solar panel receive at the distance of Saturn? Provide the solution:
- An alternating rectangular wave has a maximum value of 10 V and a frequency of 1 cycle per second. What is the average value of the wave?Distances in space are often quoted in units of light years, the distance light travels in one year. (a) How many meters is a light year? m (b) How many meters is it to Andromeda, the nearest large galaxy, given that it is 2.00 ✕ 106 light years away? m (c) The most distant galaxy yet discovered is 12.0 ✕ 109 light years away. How far is this in meters? mOn a map with 1 cm = 3000 m scale, what is the equivalent ground length of a power transmission line which is 5.25 cm in the map?
- Scientists are working on a new technique to kill cancer cells by zapping them with ultrahighenergy (in the range of 1012 W) pulses of light that last for an extremely short time (a few nanoseconds). These short pulses scramble the interior of a cell without causing it to explode, as long pulses would do. We can model a typical such cell as a disk 5.0 µm in diameter, with the pulse lasting for 4.0 ns with an average power of 2.0 x 1012 W. We shall assume that the energy is spread uniformly over the faces of 100 cells for each pulse. (a) How much energy is given to the cell during this pulse? (b) What is the intensity (in W/m2 ) delivered to the cell? (c) What are the maximum values of the electric and magnetic fields in the pulse?The image attached is a neat copy of a photo of an electricity meter for a domestic solar array. The display shows the energy we sold to the electricity company on a winter's day. Each box is 100 W high and 1 hr wide. At the radius of the earth's orbit, the intensity of sunlight is I=1.4 kW.m–2 . (This means that 1.4 kW.m–2 passes through 1 square metre at right angles to the sun's rays.) The solar array in the previous question consists of 10 panels, each with area A=1.6 m2 . Under optimal conditions - with the sun at right angles to the array and no clouds in the sky - the array produces Pout=2.3 kW . What is the efficiency of the array? Power out/power in = _____ %.Satellite TV is broadcast from satellites that orbit the earth. Their antennas broadcast a 15 kW microwave signal that covers most of North America, an area of about 2.5 × 107 km2. What is the total power that strikes a 46-cm-diameter ground-based dish antenna?
- The intensity of solar radiation that falls on a detector on Earth is 1.00 kW/m². The detector is a square that measures 6.11 m on a side and the normal to its surface makes an angle of 30.0° with respect to the Sun's radiation. How long will it take for the detector to measure 436 kJ of energy? SThe Maxwell equation derived from Ampere's Law in Electricity is a. dt in %3D dt fê JÂ = 0 Od. %3DA very small source of light that radiates uniformly in all directions produces an electric field amplitude of 8.19 V/m at a point 9.05 m from the source. What is the average power output from the source? (Use c = 2.9979 x 108 m/s)