4,347 Answered Questions for the topic Science

05/24/21

Read Question Below
A bus driver heads south with a steady speed of v1= 20.0 m/s for t1 = 3.00 min, then makes a right turn and travels at v2 = 25.0 m/s for t2 = 3.00 min, and then drives northwest at v3 =... more
Follows • 2
Expert Answers •1

05/24/21

A foreign automobile manufacturer claims that its sports car will accelerate from rest to a speed of 43.0 m/s in 7.50 s.
(a) Determine the magnitude of the average acceleration of the car (in m/s2).b) Assume that the car moves with constant acceleration. Find the distance (in m) the car travels in the first 7.50 s.c)... more
Follows • 1
Expert Answers •1

05/24/21

Read the question below
A taxi traveling at a speed of 38.0 mi/h needs a minimum of 48.0 ft to stop. If the same taxi is traveling 63.0 mi/h, determine its minimum stopping distance (in ft), assuming the same rate of... more
Follows • 1
Expert Answers •1

05/24/21

Read Question Below
A box proceeds along the x-axis and the figure below shows a record of its velocity as a function of time. Every gridline along the vertical axis corresponds to 2.00 m/s and each gridline along the... more
Follows • 1
Expert Answers •1

05/24/21

A person takes a trip, driving with a constant speed of 98.5 km/h, except for a 30.0-min rest stop. The person's average speed is 67.4 km/h.
(a) How much time is spent on the trip?(b) How far does the person travel?
Follows • 1
Expert Answers •1

05/24/21

Read Question Below
A horse and a squirrel participate in a race over a 1.10 km long course. The horse travels at a speed of 17.0 m/s and the squirrel can do 2.50 m/s. The horse runs for 0.880 km and then stops to... more
Follows • 1
Expert Answers •2

05/24/21

A block is moving along the x-axis and its position varies in time according to the expression x = (3.00 m/s^2)t^2, where x is in meters and t is in seconds.
a) Determine its position (in m) at t = 2.60 sb) Determine its position (in m) at t = (2.60 s) + Δt. (Use the following as necessary: Δt. Do not include units in your answer.) c) Evaluate the limit... more
Follows • 1
Expert Answers •1
Science

05/24/21

Environmental impacts
what can happen if you don't have a great variety of life in an ecosystem?
Follows • 2
Expert Answers •1

05/24/21

chemistry question

2.  How many grams of water can be produced with 60 grams of sulfuric acid and 200 grams of sodium hydroxide? Which reactant is limiting? How many grams of the excess reactant will be left after... more
Follows • 1
Expert Answers •1

05/22/21

determine the concentration of all aqueous species in the final solution when 455mL of 2.95 M lithium bromide is mixed with 755mL of 3.45M silver nitrate.
Follows • 1
Expert Answers •1

05/22/21

I need help solving with jules. Please and thank you!
40g of water is placed in a calorimeter at an initial temperature of 20.2˚C. After the addition of a sample of warm metal, the final temperature of the water is 23.6˚C. How much heat did the water... more
Follows • 2
Expert Answers •1

05/22/21

I need help solving this question. Please and thank you!
A 12g sample of hot metal is placed in a calorimeter with a known mass of water. It is determined that the metal releases -50J of heat in the process. The change in temperature of the metal (∆T) is... more
Follows • 2
Expert Answers •1

05/21/21

I DONT UNDERSTAND . NEED HELP

WOULD THE ANSWER BE METHANE??  On Monday, they asked their teacher about how it is possible to have so many different types of stuff from only 100 elements. Mrs. Morris, Julie’s teacher, said they... more
Follows • 2
Expert Answers •1

05/21/21

GOOD EXPLANANTION NEEDED

Julie and Terry were talking about stuff while sitting around the campfire. They were marveling about all the different types of stuff that exists. Julie told Terry that stuff is called matter and... more
Follows • 1
Expert Answers •1

05/21/21

good explanation needed!

ANSWER WOULD BE B CORRECT ?Her teacher asked her which of the following substances is not made of atoms? *Option 1Option 4Option 3
Follows • 2
Expert Answers •2
Science Biology Chemistry

05/21/21

science help needed

Julie noticed on the campout that Terry’s face had darkened from the sun. She learned that every time we are out in the sun, our bodies make Vitamin D. The Vitamin D made by the body is considered... more
Follows • 2
Expert Answers •1

05/21/21

good explanation needed! im confused

 Gummy Worms are a synthetic material, made when two chemicals, sodium alginate and calcium chloride, are mixed and allowed to react. Sodium alginate is isolated from seaweed. The other ingredient,... more
Follows • 2
Expert Answers •1

05/21/21

good explanation needed i need help

A person claims that aspirin is not “natural” and refuses to use it to relieve their pain. Which of the statements best refutes (argues against) this person’s claim? Aspirin has been used to... more
Follows • 1
Expert Answers •1

05/21/21

I dont understand ! i need help with explanation on what to do.
Mrs. Morris also found the two models below in the closet. Look closely at the models of two solids as shown below. Using your knowledge and correct terminology of the composition of matter,... more
Follows • 1
Expert Answers •1
Science

05/21/21

how many grams of water are produced from 1.5 moles of oxygen

Follows • 2
Expert Answers •1

05/21/21

physics question (idk how to do them :( )
An ice skater (m=76.4kg) is rotating in at 1.00 rad/s while moving linearly 1.50m/s. She pulls in her arms and reduces her moment of inertia from 3.60 kgm^2 to 0.300 kgm^2.a. Neglecting friction,... more
Follows • 1
Expert Answers •1

05/21/21

physics question (answer is given, but idk how to do this)
A wind turbine with 3 blades that rotate about their end (rod rotating about its end) spins with an angular velocity of 1.26 rad/s. Each blade is 25.4m long and has a mass of 13,600kg. The height... more
Follows • 1
Expert Answers •1

05/21/21

When the terminals of a 100-volt battery are connected to 2 large parallel horizontal plates 2cm apart, the electric field in the region...
When the terminals of a 100-volt battery are connected to 2 large parallel horizontal plates 2cm apart, the electric field in the region between the plates is very nearly uniform with magnitude E=... more
Follows • 1
Expert Answers •1

05/21/21

physics question
A tangential force of 360 N acts for a time of 5.0 seconds at the edge of a potter’s wheel (solid cylinder or disc) with radius 50.cm and mass 45kg. What is the change in its angular velocity?[ans:... more
Follows • 1
Expert Answers •1
Science

05/21/21

Mendel discovered that if a purple flowered pea plant was crossed with a white flowered pea plant, all the offspring had what color flowers?

Follows • 2
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.