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Leila

Questions and answers by visitors named Leila

Questions (87)

An ancient wooden club is found that contains 270g of carbon and has an activity of 8.3 decays per second.Determine its age
1. 4 answers
2. 3,788 views
Estimate the total binding energy for copper.550 MeV Estimate the energy, in joules, needed to break a 3.0g copper penny into
1. 4 answers
2. 1,882 views
I'm having a hard time understanding the Checkpoint assignment on Legislation Legacy...Can anyone help me? Here is the question:
1. 1 answer
2. 452 views
wat is 5 times 5?
1. 3 answers
2. 412 views
Hello, I'm kind of struggling with this question. Can someone please help clarify this question.Since stock price beta tend to
1. 1 answer
2. 460 views
Demand function for Zatab:Qd = 15.0 - 0.2P Q = annual quantity demanded P = wholesale price of one Zatab unit Production cost
1. 4 answers
2. 521 views
Describe two scientific theory (atomic,kinetic,cell theory) and non scientic (moral, ethical, religious theories ).Differentiate
1. 2 answers
2. 554 views
for gamma radiation 1rad=1rem, but for alpha radiation 1 rad=20rem. Why is there a difference?
1. 2 answers
2. 1,086 views
According to the 1990 Census, the population of the United States was 2.49 x 10^8. The cost of taking the census in 1990 was 2.6
1. 4 answers
2. 1,092 views
Find each product.1) 2t(t + 2) 2) (2n +1) * (n - 4)
1. 1 answer
2. 337 views
trains a and b are traveling in the same direction on parallel tracks. train a is traveling at 60 miles per hour and train b is
1. 3 answers
2. 395 views
I need help on proof reading this story.Christmas should be a time of celebrating the birth of Christ, but it seems like people
1. 3 answers
2. 1,205 views
katie is going to adopt kittens from a litter of 11. how many ways can she choose a group of 3 kittens?
1. 3 answers
2. 1,900 views
Graph and state domain and range: f(x)=[x] (greatest integer function)
1. 1 answer
2. 458 views
[Cu(NH3)4]2+ + SO4(aq)2 + H2O [Cu(NH3)4]SO4•1H2OWhat is the theoretical yield of the products?
1. 3 answers
2. 1,352 views
Water flows approx. 0 over a dam at the rate of 660 kg/s and falls vertically 86 m before striking the turbine blades. Calculate
1. 1 answer
2. 493 views
A 120-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 400 N. For the first 17 m the
1. 5 answers
2. 1,107 views
You are ﬁ ve feet tall and cast a seven-footeight-inch shadow. At the same time, a basketball hoop casts a 19-foot shadow. How
1. 3 answers
2. 1,223 views
Consider the following reaction at 298 K:C(graphite) +2Cl2 (g) -----> CCl4(l) Calculate the following quantities. Delta H: -139
1. 5 answers
2. 5,736 views
I posted this question already but you never replied back :(Consider the following reaction at 298 K: C(graphite) +2Cl2 (g)
1. 4 answers
2. 1,119 views
If the cosmic microwave background radiation (CMBR) is at a temperature of 2.7K, what is its peak wavelength?
1. 1 answer
2. 403 views
Suppose when we look in one half of the sky, the CMBR appears to be at a temperature of 2.72K. What is the peak wavelength in
1. 1 answer
2. 302 views
If the cosmic microwave background radiation (CMBR) is at a temperature of 2.7K, what is its peak wavelength?
1. 1 answer
2. 444 views
Suppose when we look in one half of the sky, the CMBR appears to be at a temperature of 2.72K. What is the peak wavelength in
1. 1 answer
2. 857 views
If the cosmic microwave background radiation (CMBR) is at a temperature of 2.7K, what is its peak wavelength?
1. 4 answers
2. 658 views
Suppose when we look in one half of the sky, the CMBR appears to be at a temperature of 2.72K. What is the peak wavelength in
1. 2 answers
2. 520 views
Suppose when we look in one half of the sky, the CMBR appears to be at a temperature of 2.72K. What is the peak wavelength in
1. 1 answer
2. 430 views
Suppose when we look in one half of the sky, the CMBR appears to be at a temperature of 2.72K. What is the peak wavelength in
1. 1 answer
2. 326 views
Suppose when we look in one half of the sky, the CMBR appears to be at a temperature of 2.72K. What is the peak wavelength in
1. 1 answer
2. 307 views
Suppose when we look in one half of the sky, the CMBR appears to be at a temperature of 2.72K. What is the peak wavelength in
1. 1 answer
2. 695 views
Suppose when we look in one half of the sky, the CMBR appears to be at a temperature of 2.72K. What is the peak wavelength in
1. 1 answer
2. 991 views
Suppose when we look in one half of the sky, the CMBR appears to be at a temperature of 2.72K. What is the peak wavelength in
1. 1 answer
2. 348 views
Suppose when we look in one half of the sky, the CMBR appears to be at a temperature of 2.72K. What is the peak wavelength in
1. 1 answer
2. 460 views
Suppose when we look in one half of the sky, the CMBR appears to be at a temperature of 2.725K. What is the peak wavelength in
1. 1 answer
2. 670 views
Suppose when we look in one half of the sky, the CMBR appears to be at a temperature of 2.725K. What is the peak wavelength in
1. 1 answer
2. 668 views
When the space shuttle (mass of the shuttle = 2 x10^6 kg) was at the outer limit of Earth's atmosphere (distance = 350 km above
1. 3 answers
2. 656 views
An 1900 kg car is traveling with a speed of (22 +- .22) m/s.With what maximum accuracy can its position be determined? delta x=
1. 1 answer
2. 329 views
An 1900 kg car is traveling with a speed of (22 +- .22) m/s.With what maximum accuracy can its position be determined? delta x=
1. 1 answer
2. 296 views
What is the smallest possible value for the angular momentum L of an electron in the n=5 shell?Lmin= 0 kg*m^2/s What is the
1. 2 answers
2. 539 views
The activity of a sample of 35(upper#) 16(lower#)Sulfer (T 1/2= 7.55x10^6 s) is 2.51x10^5 decays per second.WHat is the mass of
1. 1 answer
2. 321 views
The activity of a sample of 35(upper#) 16(lower#)Sulfer (T 1/2= 7.55x10^6 s) is 2.51x10^5 decays per second.WHat is the mass of
1. 1 answer
2. 430 views
-Estimate the total binding energy for copper?in MeV -Estimate the energy, in joules, needed to break a 3.0g copper penny into
1. 3 answers
2. 742 views
If a galaxy is traveling away from us at 2.0% of the speed of light, roughly how far away is it?t= light years I got 2.4x10^8
1. 2 answers
2. 507 views
If a galaxy is traveling away from us at 2.0% of the speed of light, roughly how far away is it?t= light years I got 2.4x10^8
1. 3 answers
2. 559 views
If a galaxy is traveling away from us at 2.0% of the speed of light, roughly how far away is it?t= light years I got 2.4x10^8
1. 1 answer
2. 855 views
The activity of a sample of 35(upper#) 16(lower#)Sulfer (T 1/2= 7.55x10^6 s) is 2.51x10^5 decays per second.WHat is the mass of
1. 1 answer
2. 400 views
Estimate the total binding energy for copper.550 MeV Estimate the energy, in joules, needed to break a 3.0g copper penny into
1. 2 answers
2. 538 views
If a galaxy is traveling away from us at 2.0% of the speed of light, roughly how far away is it?t= light years I got 2.4x10^8
1. 2 answers
2. 730 views
The activity of a sample of 35(upper#) 16(lower#)Sulfer (T 1/2= 7.55x10^6 s) is 2.51x10^5 decays per second.WHat is the mass of
1. 1 answer
2. 324 views
Estimate the total binding energy for copper.550 MeV Estimate the energy, in joules, needed to break a 3.0g copper penny into
1. 4 answers
2. 551 views
A 4x7 rectangle can be rotated about the long side to generate a cylinder. It also can be rotated about the short side to
1. 1 answer
2. 467 views
A rod of length L=1.80m is mounted to a wheel (solid cylinder) of radius R=8.00cm. A massless rope is wound on the wheel, and
1. 2 answers
2. 672 views
9/558/62 5/37
1. 4 answers
2. 326 views
in an article called " Buzz Off " by Kirsten Weir.I need help... 6. what are two consequences of spraying insecticides to get
1. 9 answers
2. 3,502 views
A driver of a car going 90 km/h suddenly sees the lights of a barrier 40.0 m ahead. It takes the driver 0.75 s to apply the
1. 3 answers
2. 1,954 views
A rectangular beam is cut from a cylindrical log of radius 15 cm. The strength of a beam of width w and height h is proportional
1. 4 answers
2. 3,057 views
You run a small furniture business. You sign a deal with a customer to deliver up to 700 chairs, the exact number to be
1. 4 answers
2. 2,621 views
A smokestack deposits soot on the ground with a concentration inversely proportional to the square of the distance from the
1. 4 answers
2. 1,718 views
For positive a, b, the potential energy, U, of a particle is given byU = b (a^2 over x^2 - a over x) for x is greater than 0 a)
1. 3 answers
2. 1,419 views
A 1 kg apple sits on a table. What is the normal force of the table acting on the apple?
1. 4 answers
2. 895 views
The path that energy & nutrients follow is an ecosytem is called an
1. 1 answer
2. 379 views
Name the element that has a density of 4.700 g/mL at STP
1. 1 answer
2. 373 views
A man shots a rifle with 30.m and hit's an object at 1.90cm. What is the flight time? What is the velocity of the shot?1.90=.19m
1. 1 answer
2. 358 views
A rifle is shot with 30.0m for distance and hit's a target at 1.90cm as a height. What is the flight time? What is the velocity
1. 1 answer
2. 499 views
HELP I NEED A TO READ ON ICY NORTH WHAT DO I READ
1. 7 answers
2. 476 views
in a homes central heating system when the room temperature measured by the thermostat reaches a set value the thermostat sends
1. 7 answers
2. 1,941 views
who are the first nations...Canada
1. 6 answers
2. 423 views
How is unity and division a theme in Canadian history?How did distinct English and French populations form in Canada? What is
1. 6 answers
2. 547 views
Ming Moved to toronto 10 years ago when he was three. He still Speaks Chinese but has learned english and some french. he
1. 4 answers
2. 674 views
do you think there is big difference in the number of deaths caused by disease and those not caused by disease.
1. 3 answers
2. 453 views
which statement from the tail is he best example of indirect characterization
1. 13 answers
2. 2,205 views
how did the Aztec become so powerful
1. 17 answers
2. 2,777 views
Sketch the regions represented by the following integrals and evaluate them using geometric formulas.4 integral 1: 2x+3dx 6
1. 6 answers
2. 796 views
Given 4∫8 (4 on top, 8 on bottom) f(x)dx= 12 and 4∫8 g(x)dx= 5.Evaluate the following: 4∫8 [2f(x)-3g(x)]dx Would I just
1. 3 answers
2. 412 views
We have a heat engine that produces 150 J of heat, does 40 J of work, and emits 110 J into another system. What is the
1. 3 answers
2. 650 views
write a balanced nuclear equation for the reaction that occurs when uranium-335 absorbs a neutron and undergoes fission to
1. 2 answers
2. 529 views
I'm struggling with factoring these two questions.36x^4 - 3x^3 - 18x^2 9x^2 + 3xy - 2y^2
1. 2 answers
2. 469 views
How many square inches of crust would it take to cover the bottom of a pie dish with a 15 inch diameter
1. 3 answers
2. 855 views
1. Click the sentence in which the subject and action verb have been underlined, and all prepositional phrases are in
1. 7 answers
2. 736 views
Is Turner Syndrome dominant or recessive?
1. 4 answers
2. 468 views
Hi, I am having trouble in my algebra homework, I'm a freshman in high school. This is my question that im having trouble with,
1. 1 answer
2. 456 views
s. Diaz wishes to save at least $1500 in 12 months. If she save $300 during the first 4 months, what is the least possible
1. 1 answer
2. 424 views
2. Assume you are performing a cross between a plant that is heterozygous for the dominant traits red flowers and wrinkled
1. 1 answer
2. 624 views
1. Assume you are performing a cross between a plant that is heterozygous for the dominant traits red flowers and wrinkled
1. 1 answer
2. 488 views
84−2⋅7+10+15÷3
1. 1 answer
2. 107 views
Samantha has a ribbon that is 14/15 yards long. She wants to cut the ribbon into pieces that are each 3/5 yards long. How many
1. 1 answer
2. 234 views
3.2/p=6.1
1. 1 answer
2. 111 views

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