A lens of focal length 15.0 cm is held 10.0 cm from a page (the object ). Find the magnification .

Answer: No

Explanation:

Electrons have negative charge. It's charge can be decimal because it's about 1.6*10-19 But number of electrons passing through a metal cannot be a decimal number. If you use Q = ne

Q - total charge

e - Charge of an electrone

n - Number of electrons

You might get decimal value for n but it doesnt mean that it shoud have decimal value . Then you have to get nearest less digit value for answer. We cant divide electrons in to pieces

Here a cat is running at constant speed which is given as 10 km/h for  5s

So here the average speed is defined as total distance moved in total time interval

so here it is given by

since

here speed of cat is constant so it will remain the same

And hence the average speed and instantaneous speed at any instant for this duration will remain the same

so here answer would be

average speed = 10 km/h

instantaneous speed = 10 km/h

Answer:

The acceleration of the biker is 2.67m/s² while that of the car is 3.75m/s². So, the acceleration of the biker is NOT HIGHER than that of the car.

Explanation:

Given that,

acceleration of biker A= ?

Initial velocity of biker Vi = Om/s

Final velocity of biker Vf = 8m/s

Time taken (t) = 3 seconds

Since acceleration is the rate of change of velocity per unit time

i.e Acceleration = (Vf - Vi) / t

A = (8m/s - 0m/s) / 3s

A = 2.67 m/s²

To know which is higher, calculate the acceleration of the car

acceleration of car A= ?

Initial velocity of car Vi = Om/s

Final velocity of car Vf = 30m/s

Time taken (t) = 8 seconds

Acceleration = (30m/s - 0m/s) / 8s

A = 30m/s / 8s

A = 3.75 m/s²

Since, the acceleration of the biker is 2.67m/s² while that of the car is 3.75m/s², the acceleration of the biker is NOT HIGHER than that of the car.

one atom of calcium, one atom of carbon, and three atoms of oxygen

CaCO3

(sorry if this is not what you are looking for)