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In lab, your instructor hands you a steel-gray mineral and asks you to identify it. You find that the mineral gives a red-brown streak. What is the mineral's probable identity?
a small fly of mass 0.25 g is caught in a spiders web. the web vibrates predominately with a frequency of 4.0 hz.a what
Three polarizing plates whose planes are parallel are centered on a common axis. The directions of the transmission axes relative to common vertical direction.
A heat engine does 349.21 J of work per cycle while exhausting 507.83 J of heat to the cold reservior. what is the cold reservior temperature in degrees Celsius
a yellow compound dissolved in methylene chloride is added to a chroma- tography column. the elution is begun using
A bob of mass(m) is suspended from a fixed point with a massless string of length(L) (i.e., it is a pendulum). You are to investigate the motion in which the string moves in a cone with half-angleθ.
The specific heat capacity of a material is 1150 J/(kg·°C). The temperature of 1.0 kg of this solid material is raised by 6.0°C. determine the change in the internal energy of the material
A disk rotates 33.5 times in 75 seconds. What is its period and frequency? If its radius is 2 meters, what is the magnitude of its acceleration and velocity, what is the 'Centrifugal Force' that is experiences
The base of the cloud, which is roughly parallel to the Earth's surface, serves as the negative plate and the region of Earth's surface under the cloud serves as the positive plate. The separation between the cloud base and the Earth's surface is ..
Suppose a string of length l under a certain tension has a fundamental frequency of 120 Hz. what is the new fundamental frequency
a resting bat sends out ultrasonic waves of 50 khz towardsan insect that is approaching the bat with a speed of 20.0
an artillery shell is fired with an initial velocity of 300 ms at 55.0deg above the horizontal. to clear an avalanche
On sept 8 2004 the genesis spacecraft crashed because the parachutedid not open. The 210kg capsule hit the ground at 311km/h and penitrated the ground to a depth of 81cm. what force did the ground exert on the capsule
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