A contractor requires a mix that is 70% sand and 30% cement by mass. He starts...
A contractor requires a mix that is 70% sand and 30% cement by mass. He starts off with 1400 kg of a mix that is 80% sand and 20% cement. How much cement should he add so that he gets the required mix?
Homework Answers
Add Answer to:
A contractor requires a mix that is 70% sand and 30% cement by
mass. He starts...
10. You are working on a concrete mix design that requires each cubic meter of concrete...
10. You are working on a concrete mix design that requires each cubic meter of concrete to have a 0.48 water-cementitious materials r atio, 1,230 kg/m' of dry gravel, 144 kg/m3 of water, and 3% air content. The available gravel has a specific gravity of Ggravel 2.6, a moisture content of2.3% and absorption of 4.5%. The available sand has a specific gravity of Gsand-2.4, a moisture content of 2.2% and absorption of 1.7%. Air entraining agent is to be included...
Hint for Part C: 5. 1792 Russell Biven decides to make some iced tea. He starts...
Hint for Part C:
5. 1792 Russell Biven decides to make some iced tea. He starts with 6 liters of water at 17°C. Assume that the properties (heat coefficients, density, etc) for iced tea are the same as for water. Ignore the pot when making calculations. Example 1 Example 2 MIX NEN NTH H Part Chk History Description Answer Russell starts by bringing the 6 liters of water to a boil. How much heat A: needs to be added to...
1. Russell Biven decides to make some iced tea. He starts with 6 liters of water...
1.
Russell Biven decides to make some iced tea. He starts with 6
liters of water at 25°C. Assume that the properties (heat
coefficients, density, etc) for iced tea are the same as for
water.
Example 1 Example 2
Part
Description
Answer
Chk
History
A.
Russell starts by bringing the 6 liters of water to a boil. How
much heat is needed to be added to bring the water to a boil?
(include units with answer)
A: 450000cal
C:...
(1) Suppose you lift a stone that has a mass of 5.3 kilograms off the floor...
(1) Suppose you lift a stone that has a mass of 5.3 kilograms off the floor onto a shelf that is 2 meters high. How much work have you done? Joules (2) Suppose you lift a laptop that weighs 3.2 pounds off the floor onto a shelf that is 4 feet high. How much work have you done? foot-pounds (3) The force on a particle is described by 9x^3−1 pounds at a point xx feet along the x-axis. Find the...
i need 2 and 3 solved (1) A typical mud is 70 wt% sand, balance water....
i need 2 and 3 solved
(1) A typical mud is 70 wt% sand, balance water. What is its density near RT if Puand = 2300 kg/mº? (2) An open-ended can 0.2 m tall is originally full of air, at 20°C. It is now immersed in water upside down, such that its top (now bottom) is 10 m below the water surface. The can is 0.2 m in height. Assuming the air stays at 20°C, how high will the water...
how much NaAl02 is required to produce 2.81 kg of Na3AlF6? nment #13 03/30/20 all 70%...
how much NaAl02 is required to produce 2.81 kg of
Na3AlF6?
nment #13 03/30/20 all 70% This is a Numeric Entry question / It is worth 3 points / You have 2 of 3 attempts remaining/Ther 13 Question (3 points) The manufacture of aluminum includes the production of cryolite (Na3AlF.) from the following reaction: 6HF + 3NaAlO2 - Na, AlF6+3H,0+A1,03 1st attempt Feedback Iw See Periodic 1 How much NaAlO2 (sodium aluminate) is required to produce 2.81 kg of Na3AlF6?...
1) Tyrion is pulling a 30 kg sled loaded with ale across an ice lake. Assume...
1) Tyrion is pulling a 30 kg sled loaded with ale across an ice lake. Assume the sled starts from rest and that it moves a distance of 10 m to the right. He pulls the sled to the right with a force of 300 N at angle of 30° above the horizontal. Once again, Cersei is trying to stop Tyrion from leaving and pulls on the sled horizontally to the left with a force of 100 N. Find the...
rack of mass 1500 kg moving at 30 m/s is braked suddenly wit 1000-V. How far...
rack of mass 1500 kg moving at 30 m/s is braked suddenly wit 1000-V. How far does the car travel before stopping? th a constant braking force of 10. A baseball batter hits an incoming 45 m/s fastball. The ball leaves the bat at 55 m/s after a ball-on-bat contact time of 0.025 s. What is the force exerted on a 0.15-kg baseball? (choose + direction) 11. A trapeze artist, with swing, weighs 800 N; he is momentarily held horizontal...
Two children are sitting on opposite ends of a scesaw of negligible mass. If 40 kg...
Two children are sitting on opposite ends of a scesaw of negligible mass. If 40 kg child is 2.0 m from the pivoted point, how far from the pivot point will the other 30 kg child sit on the seesaw to be at equilibrium? (draw diagram to show vectors) A uniform 2000 kg beam 10 m long supports a 500 kg weight 3 meters from the right support. Calculate the forces on each of the vertical support columns? (draw diagram...
Andy Mendoza makes handcrafted dolls, which he sells at craft fairs. He is considering mass- producing...
Andy Mendoza makes handcrafted dolls, which he sells at craft fairs. He is considering mass- producing the dolls to sell in stores. He estimates that the initial investment for plant and equipment will be $25,000, whereas labor, material, packaging, and shipping will be about $10 per doll. If the dolls are sold for $30 each, what sales volume is necessary for Andy to break even? Andy Mendoza is concerned that the demand for his dolls will not exceed the break-even...
10. You are working on a concrete mix design that requires each cubic meter of concrete to have a 0.48 water-cementitious materials r atio, 1,230 kg/m' of dry gravel, 144 kg/m3 of water, and 3% air content. The available gravel has a specific gravity of Ggravel 2.6, a moisture content of2.3% and absorption of 4.5%. The available sand has a specific gravity of Gsand-2.4, a moisture content of 2.2% and absorption of 1.7%. Air entraining agent is to be included...
Hint for Part C:
5. 1792 Russell Biven decides to make some iced tea. He starts with 6 liters of water at 17°C. Assume that the properties (heat coefficients, density, etc) for iced tea are the same as for water. Ignore the pot when making calculations. Example 1 Example 2 MIX NEN NTH H Part Chk History Description Answer Russell starts by bringing the 6 liters of water to a boil. How much heat A: needs to be added to...
i need 2 and 3 solved
(1) A typical mud is 70 wt% sand, balance water. What is its density near RT if Puand = 2300 kg/mº? (2) An open-ended can 0.2 m tall is originally full of air, at 20°C. It is now immersed in water upside down, such that its top (now bottom) is 10 m below the water surface. The can is 0.2 m in height. Assuming the air stays at 20°C, how high will the water...
how much NaAl02 is required to produce 2.81 kg of
Na3AlF6?
nment #13 03/30/20 all 70% This is a Numeric Entry question / It is worth 3 points / You have 2 of 3 attempts remaining/Ther 13 Question (3 points) The manufacture of aluminum includes the production of cryolite (Na3AlF.) from the following reaction: 6HF + 3NaAlO2 - Na, AlF6+3H,0+A1,03 1st attempt Feedback Iw See Periodic 1 How much NaAlO2 (sodium aluminate) is required to produce 2.81 kg of Na3AlF6?...
1) Tyrion is pulling a 30 kg sled loaded with ale across an ice lake. Assume the sled starts from rest and that it moves a distance of 10 m to the right. He pulls the sled to the right with a force of 300 N at angle of 30° above the horizontal. Once again, Cersei is trying to stop Tyrion from leaving and pulls on the sled horizontally to the left with a force of 100 N. Find the...
rack of mass 1500 kg moving at 30 m/s is braked suddenly wit 1000-V. How far does the car travel before stopping? th a constant braking force of 10. A baseball batter hits an incoming 45 m/s fastball. The ball leaves the bat at 55 m/s after a ball-on-bat contact time of 0.025 s. What is the force exerted on a 0.15-kg baseball? (choose + direction) 11. A trapeze artist, with swing, weighs 800 N; he is momentarily held horizontal...
Two children are sitting on opposite ends of a scesaw of negligible mass. If 40 kg child is 2.0 m from the pivoted point, how far from the pivot point will the other 30 kg child sit on the seesaw to be at equilibrium? (draw diagram to show vectors) A uniform 2000 kg beam 10 m long supports a 500 kg weight 3 meters from the right support. Calculate the forces on each of the vertical support columns? (draw diagram...
Most questions answered within 3 hours.
-
A simple random sample of size n=64 is obtained from a
population with a mean of...
asked 46 minutes ago -
(2 dimensions, 1 object, 2 accelerations)
1) A projectile is thrown with a wind. The wind...
asked 1 hour ago -
Brian makes $34,100 per year. How much can Brian expect to
contribute to FICA taxes in...
asked 2 hours ago -
To buy a new house you must borrow $155,000. To do this you take
out a...
asked 2 hours ago -
Spacely Sprockets is evaluating the construction of a new plant
on land the company purchased for...
asked 3 hours ago -
1. Consider a linear regression model of y on K regressors and
an intercept.
(i) Describe...
asked 3 hours ago -
Enter a balanced equation for the reaction between hydrochloric
acid and sodium sulfite.
Express your answer...
asked 3 hours ago -
Give a regular expression describing the language
{x | x ∈ Σ* and x does not...
asked 3 hours ago -
Masses of 1.0 kg, 2.0 kg, and 3.0 kg are each separately subject
to a net...
asked 3 hours ago -
The mode of philosophical argumentation and thought. How do
philosophers think and write? What is important...
asked 3 hours ago -
At the beginning of the unit, you were asked whether you thought
it was appropriate or...
asked 3 hours ago -
Calculate the grams of carbon in 9.32 x 10+23 molecules of
benzene (C6H6).
asked 3 hours ago