<span>a. amplitude. is the answer</span>
Complete question
A student measures the mass of a 1.0 kg standard bar. He obtains measurements of 0.77 kg, 0.78 kg, and 0.79 kg. Which describes his measurements
a)precise but not accurate
b)accurate but not precise
c)neither precise nor accurate
d)both precise and accurate
Answer:
The measurement is precise but not accurate
Explanation:
A measurement can either be precise or accurate.
- A Precise measurement describes how close the measured values are to each other.
- An accurate measurement describes how close a measured value is to the true value.
In this question, the measured values (0.77 kg, 0.78 kg and 0.79 kg) are far from the true value (1.0 kg), therefore the measurement is not accurate.
However, the measured values (0.77 kg, 0.78 kg and 0.79 kg) are close to each other, therefore the measurement is precise.
Therefore the correct option is 'a' the measurement is precise but not accurate
Answer: Is permanently deformed.
Explanation (see the diagram shown below).
For most structural materials:
(a) The deformation in the elastic zone is recoverable, and the material returns
to its original shape when the load (or stress) is removed.
(b) A permanent set (non-recoverable deformation) occurs when the material
is sressed beyond the elastic zone, that is, in the plastic zone.
Answer:
Dear Brother,
You are about to enter secondary school! I believe you will do great, but here are a few things you should watch out for. Number 1, toxic relationships, this would be someone that takes advantage of you, forces you to do things you don't want to, and tries to make you feel bad when you don't listen to or do what they want you too. I think the best way to solve this is to confront the person about how they make you feel. If they don't listen or you don't feel comfortable confronting them then the next best thing is to cut them out of your life. People who try to guilt trip you for stupid things and make you feel bad are not good people to be around!
Number 2, Peer Pressure, this would be when a group or single person tries to pressure you into doing something that you're not comfortable with. They could try to pressure you too, bully/prank someone, skip school, try something you know is bad like smoking or drugs. The best thing to do when you're under peer pressure is to just say no, as hard as it can be. You could also just walk away, even make up an excuse to leave. If someone keeps pressuring you to do something it is best to talk with someone you trust about it.
Number 3, Procrastination, this one can be the worst sometimes! Procrastination can be your worst enemy! But it's best to just try to power threw it. Try to remind your self that the more you wait the more stressed you'll be when it comes time to, turn in that assignment, finish that paper, or clean your room. If you really need help, try to set reminders or ask someone to push you when you get lazy.
Those are just a few tips to help you threw secondary school! I know you'll make the right choices and work hard!
Your best regards,
(insert name here)
Explanation:
Sorry this is long, but I was bored and I'm also a bit of an overachiever. I hope this helped!
-- The total distance between the towns = 460 km.
-- For the first 3 hours, he travels at an average speed of 60 km/hr. During that time, he covers (60 km/hr) x (3 hrs) = 180 km.
-- At that point, he still has (460km - 180km) = 280 km to go.
-- If he drives that 280km at an average speed of 70 km/hr, it'll take him (280km)/(70km/hr) = 4 hrs to cover it.
-- His total time for the whole trip is (3 hours for the first part) + (4 hours for the last part) = <em>7 hours</em>.