The alpha helix involves regularly spaced H ‐ bonds between residues along a chain.
If 25 is added to the numerator of a fraction and its denominator is multiplied by 10, the value of the fraction increases by 35%. What is the numerator...
4m = Sec A, 4/m = Tan A, find the value of 4( m2 - 1/m2)
4, 5, 18, 95, 672, ?.
In a class of 80 students, 75% of the students passed in Mathematics, and 85% passed in English. If 60% of the students passed in both subjects, how man...
A bag contains 5 red and 3 green balls. Two balls are drawn at random. Find the probability that both balls are red.
A car travels 120 km at a speed of 40 km/h and returns at a speed of 60 km/h. Find the average speed of the car for the whole journey.
If the total students in E are 30% more than total students in A and the total teachers in E are 40% more than total teachers in C, then find the total...
A rectangular park is 120 m long and 80 m wide. A path of uniform width is constructed inside the park. If the area of the path is 3600 m², find the wi...
In a survey, 60% of the participants are women and 40% are men. Among the women, 50% are employed, while 70% of the men are employed. If there are 200 p...
A cone has a base radius of 7 cm and a slant height of 25 cm. Find the total surface area of the cone.
