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What is meant by the phrase geologic time? Why is amber important for paleontology? Why are the most abundant fossils those of marine creatures? Give some examples of replaced remains.
a) Determine the magnitude and direction of the electrostatic force acting on particle A in the figure given below due to particles B and C . The values of the charge on these particles are indicated in the figure.
A sphere of radius R1=24.5cm and mass M=1.20kg starts from rest and rolls without slipping down a 30 degree incline that is 10.0m long. Calculate its translational and rotational speeds when it reaches the bottom
The 10-cm-wide, zero-resistance slide wire shown in (Figure 1) is pushed toward the 1.5 Ω resistor at a steady speed of 0.40 m/s . The magnetic field strength is 0.30 T, What is the magnitude of the pushing force?
A tuning fork vibrating at 516 Hz falls from rest and accelerates at 9.80 m/s2. How far below the point of release is the tuning fork while waves with a frequency of 489 Hz reach the release point? Take the speed of sound in air to be 340 m/s.
An object 2.5 cm tall is placed 23.2 cm from the front of a concave mirror with a radius of curvature of 33.1 cm. How tall is it
A 3.0kg mass initially traveling in the +x direction at 3.0m/s collides with a 2.0kg mass traveling in the -x direction at 3.0m/s. find The coefficient of restitution between the two masses
Three identical loudspeakers, spaced with 3.0 meters among adjacent speakers, play a 170Hz tone in a room where the speed of sound is 340m/s. You are standing 4.0 m in front of the middle speaker. At this point, the amplitude from each speaker indivi..
Three charged particles are placed at all of three corners of an equilateral triangle whose sides are of length 4.0 cm. Two of the particles have a negative charge: q_1 = -6.0 nC and q_2 = -12.0 nC. The remaining particle has a positive charge, q_3 =..
You are to drive to an interview in another town, at a distance of 300 km on an expressway. What would be the least speed needed for the rest of the trip to arrive in time for the interview
If in Joule's paddlewheel experiment a block of mass 10 kg is allowed to fall through 22.5 meters and the mass of the water is 50 grams
during heavy rain a section of a mountainside measuring 5.4 km horizontally perpendicular to the slope 0.40 km up along
Three carts of masses Three carts of masses m1=6.0 kg, m2=12.0 kg, and m3=5.0 kg move on africtionless horizontal track with speeds of v1 =5.0 m/s, v2 =3.0 m/s, and v3 =-4.0 m/s,as shown in Figure . The carts stick together after colliding. Find t..
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