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lanre
Questions (16)
A 25-g lead bullet is shot with a speed of 240 m/s into a wooden wall. Assuming that 70% of the kinetic energy is absorbed by
2 answers
574 views
Suppose 300 g of water at 20°C is poured over a 50-g cube of ice with a temperature of -6°C. If all the ice melts, what is the
2 answers
732 views
The thermal conductivity of fiberglass batting, which is 9.4 in thick, is 8.6 10-6 BTU/(ft °F s). What is the R value (in ft2
1 answer
483 views
The label on a soft drink states that 15 fl. oz (444 g) provides 170 kcal. The drink is cooled to 11.0°C before it is consumed.
1 answer
1,127 views
A 5-g ice cube at ?4°C is dropped into 60 g of water at 40°C. (For the following problems, use the specific heats in this
2 answers
1,043 views
A wave on a string has a wave function given by y(x, t) = (0.0210 m)sin[(6.91 m^−1)x + (2.38 s^−1)t
. (a) What is the
3 answers
1,077 views
Suppose the slope of a beach underneath the ocean is 21 cm of dropoff for every 1.2 m of horizontal distance. A wave is moving
1 answer
537 views
The tension in a 2.8-m-long, 1.2-cm-diameter steel cable (ρ = 7800 kg/m3) is 825 N. What is the fundamental frequency of
6 answers
1,067 views
A 46-cm-long wire with a mass of 10.5 g is under a tension of 52.0 N. Both ends of the wire are held rigidly while it is
1 answer
494 views
The Moon can be considered to be a sphere with uniform density with mass MM and radius RM. At the (exact) center of the Moon,
2 answers
615 views
A comet orbits the Sun with a period of 71.8 yr.
(a) Find the semimajor axis of the orbit of the comet in astronomical units (1
1 answer
567 views
A 3.3-kg ball of clay with a speed of 14 m/s is thrown against a wall and sticks to the wall. What is the magnitude of the
3 answers
504 views
A 58-kg astronaut inside a 9-m-long space capsule of mass 550 kg is floating weightlessly on one end of the capsule. He kicks
1 answer
401 views
A satellite with a mass of 260 kg approaches a large planet at a speed vi,1 = 13.1 km/s. The planet is moving at a speed vi,2 =
1 answer
551 views
A cannonball of mass 6.09 kg is shot from a cannon at an angle of 47.18° relative to the horizontal and with an initial speed
2 answers
838 views
Compute the empty cells. Consider PTN conditions (For SO2, NO, NO2, and C5H8 express the mass concentration in Kg S m-3, Kg N
1 answer
1,061 views
Answers (3)
calculated**
thanks! may I ask how you calculate the fundamental wavelength or is it a constant?
thanks! but whats ñ
