4,347 Answered Questions for the topic Science

Science Trigonometry

07/13/20

A child is in danger of drowning in the Merimac river. The Merimac river has a current of 3.1 km/hr to the east. The child is 0.6 km from the shore and 2.5 km upstream from the dock.
A child is in danger of drowning in the Merimac river. The Merimac river has a current of 3.1 km/hr to the east. The child is 0.6 km from the shore and 2.5 km upstream from the dock. A rescue boat... more
Follows • 1
Expert Answers •1
Science Trigonometry

07/13/20

You are on a train traveling east at speed of 12 m/s with respect to the ground.
You are on a train traveling east at speed of 12 m/s with respect to the ground.1)If you walk east toward the front of the train, with a speed of 2.6 m/s with respect to the train, what is your... more
Follows • 1
Expert Answers •1
Science Trigonometry

07/13/20

You are on a train traveling east at speed of 12 m/s with respect to the ground.
You are on a train traveling east at speed of 12 m/s with respect to the ground.1)If you walk east toward the front of the train, with a speed of 2.6 m/s with respect to the train, what is your... more
Follows • 1
Expert Answers •1

07/11/20

A soccer ball is kicked with an initial horizontal velocity of 12 m/s and an initial vertical velocity of 18 m/s.
A soccer ball is kicked with an initial horizontal velocity of 12 m/s and an initial vertical velocity of 18 m/s. 1)What is the initial speed of the ball?2)What is the initial angle θ of the ball... more
Follows • 1
Expert Answers •1

07/11/20

A cannonball is shot (from ground level) with an initial horizontal velocity of 34 m/s and an initial vertical velocity of 26 m/s.
A cannonball is shot (from ground level) with an initial horizontal velocity of 34 m/s and an initial vertical velocity of 26 m/s.1)What is the initial speed of the cannonball?2)What is the initial... more
Follows • 1
Expert Answers •2

07/11/20

The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 12 m/s at an angle 47 degrees
Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 12 m/s at an angle 47 degrees; with respect to the horizontal.... more
Follows • 1
Expert Answers •1

07/11/20

The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 12 m/s at an angle 47 degrees
Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 12 m/s at an angle 47 degrees; with respect to the horizontal.... more
Follows • 1
Expert Answers •1

07/11/20

Ted Williams hits a baseball with an initial velocity of 120 miles per hour (176 ft/s) at an angle of θ = 35 degrees to the horizontal.
Ted Williams hits a baseball with an initial velocity of 120 miles per hour (176 ft/s) at an angle of θ = 35 degrees to the horizontal. The ball is struck 3 feet above home plate. You watch as the... more
Follows • 2
Expert Answers •1

07/10/20

A red ball is thrown down with an initial speed of 1 m/s from a height of 27 meters above the ground.
A red ball is thrown down with an initial speed of 1 m/s from a height of 27 meters above the ground. Then, 0.7 seconds after the red ball is thrown, a blue ball is thrown upward with an initial... more
Follows • 2
Expert Answers •1

07/10/20

A blue ball is thrown upward with an initial speed of 23.5 m/s, from a height of 0.7 meters above the ground. 2.9 seconds after the blue ball is thrown.
A blue ball is thrown upward with an initial speed of 23.5 m/s, from a height of 0.7 meters above the ground. 2.9 seconds after the blue ball is thrown, a red ball is thrown down with an initial... more
Follows • 2
Expert Answers •1
Science Math Physics

07/10/20

Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. The blue car accelerates uniformly at a rate of 3.4 m/s^2 for 4.1 seconds.
Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. The blue car accelerates uniformly at a rate of 3.4 m/s2 for 4.1 seconds. It then continues... more
Follows • 2
Expert Answers •1

07/08/20

Renewable resources

Currently many plastics are made from non-renewable resources, what are some of the changes that willinfluence plastics in the future?  
Follows • 1
Expert Answers •1

07/08/20

Thermosetting and thermoplastic polymers
Both thermosetting and thermoplastic polymers have strong covalent bonds within the polymer chains. What is the difference in bonding between the chains? 
Follows • 1
Expert Answers •1
Science Chemistry

07/08/20

Thermosetting and Thermoplastic

1.) What is the type of bonding within the polymer for thermosetting?2.) What is the type of bonding within the polymer for thermoplastic?3.) What is the type of bonding between polymer chains for... more
Follows • 1
Expert Answers •1

07/06/20

What are the correct IUPAC names for following alkanes?
x-apple-ql-id://EC0092B4-2BB1-4E9D-A0E9-3623B9EC8D1C/x-apple-ql-magic/09E6702D-076D-497B-B9A9-EA75306A463D.pdfWhat the the names?
Follows • 1
Expert Answers •2

07/06/20

What are the structural formula?
• 3-ethyl-2-pentanol•decanoic acid•pi-dichlorobenzene•methyl propanoate•2,3-pentanedione
Follows • 2
Expert Answers •1
Science Physics

07/04/20

Can you please provide a complete solution for letters a and b. Please also provide a free body diagram (FBD) for this
A 10-kg cart is released from rest with no slack in the cable and with the spring unstrethced. The spring constant is 125 N/m. a. When m=0, the cart travelled 0.663 m before coming to rest.... more
Follows • 1
Expert Answers •1
Science

07/02/20

Matter is anything that has mass and occupies space - True or false
- True or false Only living things are matter Amass balance can be used to measure the mass of matter Mass can be measured in litres A measuring cylinder can be used to measure the volume of a... more
Follows • 1
Expert Answers •1
Science Physics

06/27/20

Explain how wearing a hat can reduce the rate of energy transfer from your head.
Explain how wearing a hat can reduce the rate of energy transfer from your head.
Follows • 1
Expert Answers •1

06/25/20

What do materials scientists do?
Follows • 1
Expert Answers •1
Science

06/25/20

A spoonful of salt has 10 grams. A cup of water has 300 grams. What do you predict will be the total mass of saltwater when the salt is dissolved in the water?
Follows • 1
Expert Answers •1
Science

06/24/20

I have a pack of 6oz small bottle rockets i bought for the 4th of july. 2 of the pointy caps came off. Can they still be used.
Follows • 1
Expert Answers •1
Science

06/20/20

What is the difference between melting and freezing point
Follows • 1
Expert Answers •2

06/18/20

Pressure of oxygen
If the partial pressure of oxygen is the same at the top of Mount Everest (elevation above sea level 8848m) as Toronto (elevation above sea level 76m), why is it so much harder (and dangerous) to... more
Follows • 3
Expert Answers •1

06/18/20

Asthma question
How does asthma negatively affect a person's ability to get oxygen? Discuss the change in airway and the affect on gas accessibility. How do increased levels of CO2 affect the ability of hemoglobin... more
Follows • 1
Expert Answers •2

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.