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Science and Engineering
Page 4
Questions (297)
How many simple machines are in the following things?
crow bar nutcracker pizza cutter siccors egg beater with a handle
4 answers
asked by
Anonymous
359 views
the zero input response of a series RLC circuit with R=80 ohms is
V(c)=2e^(-2000t)cos(1000t)-4e^(-2000t)sin(1000t) V for t>0 if
1 answer
asked by
alice
341 views
Thermal Energy Essay
3 answers
asked anonymously
13 views
If a car is traveling 60 miles per hour, how far does it travel in one minute?
Thanks
2 answers
asked by
Justin
197 views
A typical electric air conditioner rated at 1.00 * 10^4 Btu/h (1 Btu = amount of energy required to raise the temperature of 1
3 answers
asked by
kuljit
508 views
hi, i think this prob has to do what you did the last time
but how does pressure play appart in this chapter?? What pressure
4 answers
asked by
Rachelle
600 views
Which has the most sure resistance: a flat sheet of paper or a paper airplane?
A. A sheet of paper because it has a wider area B.
3 answers
asked by
Gelo
69 views
engineering foundations 2 calculations and converstions question.
How do I round off the following numbers to three significant
1 answer
asked by
carmen
462 views
I have a list of people where i have to separate them into scientists and engineers and i have one doubt.
is thomas alva edison
3 answers
asked by
julie
595 views
A recording engineer works in a soundproofed room that is 47.5 dB quieter than the outside. If the sound intensity in the room
1 answer
asked by
Mary
410 views
When we compare three different materials (a steel alloy, an aluminium alloy and a composite material), what is the worst option
1 answer
asked by
shawon
46 views
I have to create a 5-layer density column, using liquids that are not flammable or chemicals, so basically you have to be able
1 answer
asked by
Jana
710 views
Your green house irrigation sytem is plumbed with 3/4" pvc pipe from which 1/2" branch lines are routed to each row of plants.
1 answer
asked by
Matt
1,061 views
Three of the four designs DID lift the required mass. One design fell short. After reviewing the other designs, it is apparent
1 answer
asked anonymously
37 views
An engineer wants to build a race car which will be able to speed up and slow down quickly. She is trying to determine which
1 answer
asked by
Eli
149 views
Corrosion inhibitors
1 answer
asked by
Kelvin
37 views
Drag race tires in contact with an asphalt surface probably have one of the higher coefficients of static friction in the
3 answers
asked by
Jade
2,495 views
The constant resistance of a resistor is 30 ohms, independent of the temperature. The resistor is made up of an aluminium
3 answers
asked by
Joseph
1,841 views
Question 5 of 10 | Page 5 of 10
Question 5 (1 point) An engineer wants to build a race car which will be able to speed up and
1 answer
asked by
lol
34 views
During a manufacturing process, a metal part in a machine is exposed to varying temperature conditions. The manufacturer of the
1 answer
asked by
hatemaths
48 views
the spacecraft shown below weighs 6.1 million pounds. the rocket produces 7.5 million pounds of thrust.
when the spacecraft falls
1 answer
asked by
no name
45 views
Question 10 (1 point)
An engineer wants to build a race car which will be able to speed up and slow down quickly. She is trying
1 answer
asked anonymously
91 views
Rohan is an engineer who determines the quantity of water that flows from a river into a dam. Which of the following tools will
1 answer
asked by
...
144 views
A supply plane needs to drop a package of food to scientists working on a glacier in Greenland. The plane flies 50.0m above the
4 answers
asked by
Alez
1,410 views
This isn't a homework/quiz question, Well I guess it is homework, But I need to find out three types of friction in a machine I
1 answer
asked by
Luna
1,248 views
A landscape architect is planing an artificial water fall. Water flowing at 1.11 m/s will leave the end of a horizontal channel
1 answer
asked by
Margaret
1,163 views
Looking up the specifications of an oil online, the spec sheet indicates that the specific gravity of this oil is .93.
Does this
2 answers
asked by
Chris
1,175 views
A roller coaster is at the top of a 54 meter hill
1 answer
asked anonymously
12 views
freezing and thawing cycle that causes potholes in roads and breaks in rocks
___ ___ ___ ___ ___ ___ ___ ___ ____
5 answers
asked by
kayla
1,145 views
Calculate the amount of heat in kilojoules released when 50 grams of steam at 125 C are convert to 50 grams of ice at 125 C
4 answers
asked by
Joshua
1,122 views
We have to build a catapult that can launch a marshmallow at least 10 feet. Can anyone give me any ideas?
2 answers
asked by
Lance
1,093 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
Anonymous
1,094 views
I have to build a mini solar car for a school project and i have three solar cells that i bought. whenever i hook up the solar
1 answer
asked by
Matt
1,053 views
What are bearings?
Bearings are things that surround rotating shafts to reduce friction and wear. The word "bearing", as in
1 answer
asked by
Fred
1,080 views
A popular brand of automobile radiator antifreeze advertises that their product (ethylene glycol; C2H6O2) provides engine
2 answers
asked by
Angelica
1,039 views
For your discussion assessment, you will present your proposal of a device that minimizes heat transfer. Respond to at least two
1 answer
asked by
help
1,026 views
A student wraps 10 coils of copper wire around an iron bolt, and then she connects the ends of the wire to a battery. Next, the
1 answer
asked by
@slaxyo on discord
35 views
A student made an electromagnet using an iron bolt, copper wire coiled three times around the bolt, and a battery. How can he
1 answer
asked by
@slaxyo on discord
37 views
A hydroelectric dam is used to make electricity. It works the same as our simulation to create electricity. Water spins a magnet
1 answer
asked by
. . .
58 views
A hole is drilled through a copper plate whose temperature is 17.2 °C. When the plate is heated to 191 °C, by what fraction
3 answers
asked by
Micah
947 views
The New River Gorge bridge in West Virginia is a 518-m-long steel arch. How much will its length change between temperature
2 answers
asked by
Maria
894 views
You are a Chemical engineer, trying to synthesize N2H4(l). Your boss suggests that you try to synthesis it from the elements,
2 answers
asked by
Sue
864 views
Before accepting a large shipment of bolts, the director of an elevator construction project checks the tensile strength of a
2 answers
asked by
Mary
810 views
How are mm, torr, psi, atm, and Pa related to each other?
2 answers
asked by
delaney
792 views
Im doing an egg car crash project, is there any tips and tricks to protect your egg in a made car?
4 answers
asked by
Joe
717 views
I am doing this ice design project at my school and I've completed almost all of it. However, I am having a bit of trouble with
2 answers
asked by
Benny on the dispatch
722 views
Calculate the water pressure at the base of the Hoover Dam. The depth of water behind the dam is 220
1 answer
asked by
Ericca
719 views
Suppose you have 7 pieces of wood shown to the right. Predict what will happen to the mass of the pieces of wood if you put them
7 answers
asked by
Anonymous
723 views
Why are the properties of alloys gnerally superior to their constituent components?
In most cases, not all, mixing metals forms
1 answer
asked by
Bryan
706 views
If 395 grams of water at 21 Celsius absorbs 285kJ of heat from a mountain climbers stove at an elevation where the boiling point
2 answers
asked by
Kay
698 views
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