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In a church choir loft, two parallel walls are 5.70 m apart. The singers stand against the north wall. The organist faces the south wall, sitting 0.750 m away from it. So that she can see the choir, a flat mirror 0.600 m wide is mounted on the south wall, straight in front of the organist. What width of the north wall can she see? (Hint: Draw a top-view diagram to justify your answer.)
=________ m
In the purification process, the organic layer is washed with 2 M NaOH and then with water. What is the purpose of these washes
How many cells are on the plate. What fraction of the cell surface is occupied by receptors versus normal phospholipids
Characteristics of Mendels garden pea plant Pisumsativum that make it an ideal organism for genetic experiments and why the two characteristics are useful.
An astronomical telescope for hobbyists has an angular magnification of -130. The eyepiece has a focal length of 5.50 mm. how long is the telescope
A solution contains 0.063g of oxalic acid, H2C2O4*2H2O, in 250 mL. What is the molarity of this solution?
One method of determining the refractive index of a transparent solid is to measure the critical angle when the solid is in air. what is the index of refraction of the solid
Two concentric current loops lie in the same plane. The smaller loop has a radius of 3.0 and a current of 12. What is the radius of the bigger loop
Calculate the price elasticity of demand for the following demand function
A student determined the Ca^2+ ion content of a 100 mL sample of calcium-fortified orange juice. After adding 2.0 M HCl solution to the sample, the student filtered the juice to remove the pulp and other particulate matter.
The accepted value for the suns intensity at the earth is measured on an area with its normal along the suns "ray". Calculate the temperature of the sun
Starting from rest, a 4.30-kg block slides 2.00 m down a rough 30.0° incline. Determine the work done by the force of gravity
A certain type of laser emits light that has a frequency of 5.4 x10^14 Hz. The light, so, occurs as a series of short pulses, each lasting for a time of 2.7 x10-11 s.
A planet moves in an elliptical orbit around the sun. The mass of the sun is Ms. The minimum and maximum distances of the planet from the sun are R1 and R2, in that order.
An automobile tire is inflated with air originally at 10.0°C and normal atmospheric pressure. During the process, What is the tire pressure in pascals
A raft is made out of 10 logs that are 56cm in diameter and are 6.1m long. How many people (68kg each) can stand on the raft with out getting there feet wet
How many joules of kinetic energy does a 750-{rm kg} automobile travelling at the typical highway speed of 65 {rm{ mi/h}} have.
Light of a wavelength 450 nm is incident on a sodium emitter in a photoelectric effect apparatus. Sodium is 2.3 eV, What is the stopping potential for the emitted electrons
An object 3.4 mm tall is placed 25cm from the vertex of of a convex spherical mirror. how far is the image from the vertex of the mirror
Suppose now that the apparatus is sealed, and the temperature rises to 40.0o C. Find the pressure inside the apparatus now
A loudspeaker in a parked car is producing sound whose frequency is 20680 Hz, what is the minimum speed of the moving car
Find the minimum initial speed of a projectile in order for it to reach a height of 1961 km above the surface of the earth
When Philippe Petit was in the middle of the wire between the World Trade Center Towers the wire depressed 1 ft. If during his 40 minutes of tricks the wire began to oscillate up and down from this equilibrium position by 6 inches, where is his ki..
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