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Science and Engineering
Page 5
Questions (297)
A block of wood will sink 10 cm in freshwater. How far will it sink in seawater. The specific gravity of seawater is 1.025.
I'm
1 answer
asked by
zoe
694 views
the heating element of a coffee maker operates at 120 V and carries a current of 2 A. Assuming that the water absorbs all of the
2 answers
asked by
April
677 views
Four rivers have the same volume of water flow over time but fall from different heights to power hydroelectric dams. Which dam
1 answer
asked by
Bella
49 views
A dam blocks the passage of a river and generates electricity. Approximately 57,000 kg of water fall each second through a
2 answers
asked by
Anne
645 views
A pool must be 25 meters long and 3 meters deep and the room is only 10 meters wide can u still build a pool that will hold 800
2 answers
asked by
Kaliah Gables
634 views
A mountaineer is doing a vertical rappel. She is using a big boulder as her anchor. The Mountain guides association advises that
1 answer
asked by
Riley
604 views
A race car travels northward on a straight, level track at a constant speed travels 0.756 km in 18.0 s. The return trip over the
2 answers
asked by
tina
595 views
when 1 g of gasoline is burned in an engine about 48 kj of heat is produced. how much mass is lost in the process? do you think
4 answers
asked by
sam
578 views
What simple machines are in a skateboard?
2 answers
asked by
Anonymous
581 views
For my final exam I must build a paper tower that stands at least 60+ inches. These are what I can use.
-One sheet of paper
4 answers
asked by
Jacob
585 views
Explain how crash tests help engineers test the air bag design.
1 answer
asked by
hehe
45 views
The makers of the MAGNETIZER Engine Energizer System (EES) claim that it improves gas mileage and reduces emissions in
2 answers
asked by
Nicole
565 views
How do you convert 3.345 kJ to mJ?
2 answers
asked by
Gray
558 views
A model train is a scale model created from actual measurements. The scale factor for HO or Half Zero model trains is 1:87. A
4 answers
asked by
Anonymous
586 views
Water can be heated in tightly woven baskets by dropping in hot rocks. The technique is useful for cooking in the absence of
2 answers
asked by
Martyna
556 views
A steel wire is used to lift heavy object. The cable has a diameter of 14.25 mm and an initial length of 33.5 m. If the cable
2 answers
asked by
Idali
549 views
I've got a similar question as a previous student.
What is a minimum volume (in gallons) of ethylene glycol (CH2OHCH2OH, an
2 answers
asked by
Holly
571 views
A car weighing 1200kg was moving at a speed of 15m/s.breaks were applied and it stopped 6s latter.draw a graph showing the
2 answers
asked by
Oscar
569 views
In the space below, write a paragraph describing the work of a chemical engineer. Include a description of the different
2 answers
asked by
Anonymous
544 views
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature.
2 answers
asked by
kkr
521 views
You are handed a well insulated container holding about 100ml of water at a temp between 75 deg C and 100 deg C. you are given a
7 answers
asked by
Anonymous
560 views
Convert 125000 Pa to psi
2 answers
asked by
Kate
521 views
What metals are suitable for use as the cage around the magnesium metal?
2 answers
asked by
Brit
553 views
LED light bulbs are manufactured with an average life span of 16 years and the bulb lifespans are known to follow an exponential
2 answers
asked by
Amanda
526 views
Why is Iron not recommended for construction of steam pipes?
Is it because Iron reacts with air then absorbs water to form
2 answers
asked by
Anonymous
551 views
An ice cube is placed in a microwave oven. Suppose the oven delivers 135 W of power to the ice cube and that it takes 30200 J to
2 answers
asked by
Anonymous
528 views
Answer the following for a face centered unit cell. answers should be numerical. r=6.00
edge in terms of r, the lattice pt radius
4 answers
asked by
random
532 views
Tungsten has been used to make light bulb filaments since 1908. The melting point of tungsten is 3422 °C and the heat of fusion
2 answers
asked by
dan
522 views
How many calories are required to heat 10 ml of water from 25 degrees Celsius to 35 degrees Celsius?
2 answers
asked by
tammy
511 views
My assignment is to fit my entire body through an index card. the hint is it involve folding. i don't get it.
You need to fold
1 answer
asked by
Miles Maynor
529 views
Hi
I am zahra rashedi. I am student on my maser projects in sharif universityy of technology.In my project, I must be obtained
2 answers
asked by
zahra
506 views
Electric motors create motion by using magnets and electromagnets. What can a person do to make an electric motor stronger? (1
1 answer
asked anonymously
32 views
Determine the radius of the largest atom that can be accommodated in the interstices of BCC iron (Fe) without stress. (Hint: the
2 answers
asked by
adex
523 views
Bronze is an alloy that is made of zinc, tin, and copper in a specified proportion. Suppose an order is placed for 1000 pounds
2 answers
asked by
Trish
520 views
the saturn V rocket is 364 feet long. How many 4 foot tall people would hav to stand on top of each other to be as tall as the
2 answers
asked by
TAYLOR
499 views
You are the design engineer in charge of the crashworthiness of new automobile models. Cars are tested by smashing them into
1 answer
asked by
Lisa
494 views
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature.
6 answers
asked by
Joel
497 views
what is the weight of a ten foot length of steel pipe? the inside diameter of the pipe is 3/4 of an inch, and the outside
2 answers
asked by
jean
492 views
How do i work out the mass of a flywheel. I am given the density as 7800kg/m3, a 760mm diameter and a 180mm width.
Please help
2 answers
asked by
simon
481 views
I have to design a procedure which allows me to calculate the applied rocket thrust force of a stomp rocket. The only materials
2 answers
asked by
Mackenzie
494 views
A steel section of the Alaskan pipeline had a length of 65.1 m and a temperature of 15.8 °C when it was installed. What is its
2 answers
asked by
Bob
488 views
I did an experiment where I had to measure how fast water flowed out of a container at different times and with different
3 answers
asked by
Liz
480 views
i need to make a gold rube berg simple machine(i think that is what it is called) and i need some ideas and some tips
THANK YOU
4 answers
asked by
anna
467 views
1. a large vertical rectangular plate of glass is to be inserted in the wall of an aquarium underwater so visitors can see into
2 answers
asked by
student
472 views
What can be done to improve the efficiency of a ramp?
1 answer
asked anonymously
177 views
1. a large vertical rectangular plate of glass is to be inserted in the wall of an aquarium underwater so visitors can see into
1 answer
asked by
student
477 views
Certain kinds of steel expand one part in 100,000 for each 1o C they increase in temperature. If a section of a bridge that has
1 answer
asked by
Ariannah
474 views
After a shipwreck, a solid steel spoon lies at the bottom of the ocean, 5.75km below the surface. What's the water pressure at
1 answer
asked by
Tyler
462 views
Energy Budget for a Rocket in Free Space: Recall the analysis of the rocket engine in Project I, Flight of the Rocket. Although
1 answer
asked by
Steve
471 views
victoria falls is about 108 m high, and sometimes as much as 550,000,000 m3 of water rushes over the edge each minute. what is
1 answer
asked by
Hillary
453 views
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