Block A in Fig weighs 2.40 N and block B weighs 3.60 N.

College Physics 1
Problem 6PE A team of eight dogs pulls a sled with waxed wood runners on wet snow (mush!). The dogs have average masses of 19.0 kg, and the loaded sled with its rider has a mass of 210 kg. (a) Calculate the magnitude of the acceleration starting from rest if each dog exerts an average force of 185

Organic Chemistry 2
As part of a study on cyclopropane derivatives of fatty acids, the following amide was subjected to mass spectrometric analysis (J. Org. Chem. 1977, 42, 126129). The most abundant peak in the spectrum was found at m/z = 113. Suggest a reasonable structure and mechanism of formation for the ion consis

Physics for Scientists and Engineers, 6
Darlene is a stunt motorcyclist in a traveling circus. For the climax of her show, she takes off from the ramp at angle _0, clears a ditch of width L, and lands on an elevated ramp (height h) on the other side (Figure 3-42). (a) For a given height h, find the minimum necessary takeoff speed vmin nee

Probability and Statistical Inference 9
As a clue to the amount of organic waste in Lake Macatawa (see Example 7.1-4), a count was made of the number of bacteria colonies in 100 milliliters of water. The number of colonies, in hundreds, for \(n = 30\) samples of water from the east basin yielded \(\begin{array}{rrrrrrrrrr} 93 & 140 & 8 & 1

Physical Chemistry 8
A perfect gas undergoes isothermal compression, which reduces its volume by \(1.80\ \mathrm{dm}^3\). The final pressure and volume of the gas are 1.97 bar and \(2.14\ \mathrm{dm}^3\), respectively. Calculate the original pressure of the gas in (a) bar, (b) Torr.

Essentials of Understanding Psychology 11
Match the portion of the brain with its function: a. medulla 1. b. pons 2. c. cerebellum 3. d. reticular formation 4. Maintains breathing and heartbeat. Controls bodily balance. Coordinates and integrates muscle movements. Activates other parts of the brain to produce general bodily arousal.

Plant Systematics 3
What criteria are used to distinguish between ovule types? Which type is most common and ancestral in the angiosperms?

Biochemistry 9
List two classes of compounds derived from arachidonic acid. Suggest some reasons for the amount of biomedical research devoted to these compounds.