Chemistry, 10.07.2019 11:00 CameronVand21

Assuming that the smallest measurable wavelength in an experiment is 0.430 fm , what is the maximum mass of an object traveling at 885 m⋅s−1 for which the de broglie wavelength is observable?

Answers: 1

Show answers

Answers

Answer from: cherkaouinazihp387bk

- The maximum mass of the object is 1.74*10^-^2^1kg .

Solution:- The equation for de-Broglie wavelength is:

$\lambda =\frac{h}{mv}$

where, h is planck's constant, m is the mass and v is the velocity.

Given wavelength is 0.430 fm. fm stands for femtometer. let's convert it to meter.

1fm=10^-^1^5m

$0.430fm(\frac{10^-^1^5m}{1fm})$

= 4.30*10^-^1^6m

velocity is given as 885m.s^-^1 . Let's plug in the values in the equation:

$4.30*10^-^1^6m=\frac{6.626*10^-^3^4J.s}{m*885m.s^-^1}$

(at denominator the first m stands for mass and the second m is the unit of length that stands for meter)

We know that, J=kg.m^2.s^-^2

So, $4.30*10^-^1^6m=\frac{6.626*10^-^3^4kg.m^2.s^-^1}{m*885m.s^-^1}$

$4.30*10^-^1^6m=\frac{7.48*10^-^3^7kg.m}{m}$

$m=\frac{7.48*10^-^3^7kg.m}{4.30*10^-^1^6m}$

m=1.74*10^-^2^1kg

So, the maximum mass of the object is 1.74*10^-^2^1kg .

Answer from: Quest

Answer: abeexplanation:

1. the question asks the most appropriate, which seems to rule out "all of the above." your choice appears to be the correct one.

2. the protocol described is good for identifying correlation, but not cause and effect. for cause/effect, you need to devise a protocol that will assign the treatment (or not) to groups that have essentially the same "demographics" with respect to all the other variables. your choice regarding control group seems appropriate. random assignment of treatment (choice d) may be appropriate also. (i think you can argue that b and d are just different descriptions of the same method.)

3. d will randomize the birds, but may not guarantee there are 10 in each group. e will do both, so seems the better choice.

comment on question 2

based on the problem statement, it seems clear that confident, attentive drivers are more likely to use daytime running lights. so, the protocol might need to be devised in such a way that the lights would be turned on or off without the driver's knowledge. (an attentive driver will figure it out.) assigning a confident, attentive driver to a group required to drive without running lights might mess with his/her confidence and attentiveness. you don't want your experiment to do that. (nor do you want the experiment to subject a driver to greater risk of accident as a consequence of driving without running lights.) experiments involving human safety are always problematic.

Answer from: Quest

Enzyme make a hormone as a catalyst

Another question on Chemistry

Chemistry, 22.06.2019 09:00

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

Answers: 2

Answer

Chemistry, 22.06.2019 13:10

What type of interaction occurs between the r groups of valine and isoleucine in a tertiary structure? view available hint(s) what type of interaction occurs between the r groups of valine and isoleucine in a tertiary structure? salt bridge disulfide bridge hydrogen bond hydrophobic interaction

Answers: 1

Answer

Chemistry, 23.06.2019 00:30

What are the advantages of using the metric system? designed as a decimal system making conversions simpler more accurate system of measurement has prefixes that correspond to an amount to use with all base units used by the entire scientific community

Answers: 2

Answer

Chemistry, 23.06.2019 03:00

In november 1987, a massive iceberg broke loose from the antartic ice mass and floated free in the ocean. the chunk of ice was estimated to be 98 mi long, 25 mi wide, and 750 ft thick. a typical backyard swimming pool contains about 24,000 gallons of water. how many of these pools could you fill from the water in this iceberg? (assume the iceberg is a rectangular solid of the above dimensions and consists of water only). express answer in scientific notation.

Answers: 3

Answer

You know the right answer?

Assuming that the smallest measurable wavelength in an experiment is 0.430 fm , what is the maximum...

Questions