Bala

This page lists questions and answers that were posted by visitors named Bala.

Questions

The following questions were asked by visitors named Bala.

A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along a straight road. During the first part, she rides for 22 minutes at an average speed of 6.60 m/s. During the second part, she rides for 36 minutes at an av...

An 18-year-old runner can complete a 10.0-km course with an average speed of 4.48 m/s. A 50-year-old runner can cover the same distance with an average speed of 4.18 m/s. How much later should the younger runner start in order to finish the course at the...

Variation in biology is a) inevitable b) exciting c) the raw material for natural selection d) best described by statistics e) all of the above

Forces of 11.5 N north, 20.4 N east, and 15.7 N south are simultaneously applied to a 3.74 kg mass as it rests on an air table. What is the magnitude of its acceleration?

Forces of 11.5 N north, 20.4 N east, and 15.7 N south are simultaneously applied to a 3.74 kg mass as it rests on an air table. What is the direction of the acceleration in degrees? (Take east to be 0 degrees and counterclockwise to be positive.)

A block of mass M resting on a 21.5° slope is shown. The block has coefficients of friction μs=0.605 and μk=0.344 with the surface. It is connected via a massless string over a massless, frictionless pulley to a hanging block of mass 2.57 kg. What is the...

1) A microphone has an area of 6.7 cm2. It receives during a 4.62 s time period a sound energy of 2.5x10-11 J. What is the intensity of the sound? 2) Using the intensity in the previous question, what is the variation of pressure in the sound wave if the...

A snapshot graph of a travelling wave is shown. The wave is travelling to the right at 50.0 m/s. What is the amplitude if the maximum displacement is 38.0 cm and the total distance travelled by the wave is 16.0 m?

600cm3 of a gas has a pressure of 1200mmHg find its volume if the pressure is reduced to 1001mmHg

If 2/3 part of a number is greater by 4 than 3/5 of it. then the number is

Pls give me five fraction’s that are smaller then 1/4

Answers

The following answers were posted by visitors named Bala.

-3/5 because -3x - 4= 2x-4

why do we subtract the two velocities?

are u at mac????....doing cappa questions???? .....i got the answer...its 1.55*10^2 m

do u have an extension number??? u can cal me 51185. he has outline the equations above mgh=1/2m(final velocity-initial velocity) >therefore the m will cross out on both sides >then we knw that accelaration= -9.8m/s2 >do the calculations on the left side...

you welcome. for the second part use this equation s=1/2(u+v)t s= to the distance you got in the previous answer

u= initial velocity. omg question 7 was sooo stupid!! all you do is get the distance from the house to the tree and divide by the (final time - initial time. ( we only consider the distance form the house to the tree because according to displacement when...

nope it was positive :)

thnx......i found out my mistake. i didn't convert the distance to meters :)

i got 255m but am sure we have different numbers in the question.

lol sorry ma internet went all hay wire on me!!! i got 255 m for the entire run for questin 7

no i didnt. did you get 13 and 14

It's asking for the direction of acceleration. I calculated the acceleration already.

Thank youuu sooo much i didn't see it that's why i kept posting it :(