Ask question

Ask question

All categories

3 years ago

11

A calculus book weighing 20 N rests on the floor of a classroom. The reaction to the force of the floor on the book is a force o

f

1 answer:

umka21 [38]3 years ago

6 0

First off, Newtons dont measure weight, it measures force. Assuming thats a tyo, the answer is 20 N

You might be interested in

What is meant by specific latent heat of fussion

Lunna [17]

Answer:

Boiling point of water is 100 deg C. It takes about 540 cal to change 1 g of water at the boiling point to 1 g of steam at 100 deg C.

5 0

2 years ago

A cosmic ray proton moving toward the Earth at 5.00 10 m/s 7 × experiences a magnetic force of 1.70 10 N −16 × . What is the str

EastWind [94]

Answer:

Magnetic field will be equal to $B=3\times 10^{-5}T$

Explanation:

We have given velocity of proton $5\times 10^7m/sec$

Magnetic force experienced by proton $F=1.7\times 10^{-16}N$

Charge on proton $q=1.6\times 10^{-19}C$

Angle between field and velocity $\Theta =45^{\circ}$

Force in magnetic field is equal to $F=qBVsin\Theta$

So $1.7\times 10^{-16}=1.6\times 10^{-19}\times 5\times 10^7\times B\times sin45^{\circ}$

$B=3\times 10^{-5}T$

So magnetic field will be equal to $B=3\times 10^{-5}T$

7 0

3 years ago

If we monitor a point on a wire where there is a current for a certain time interval, which gives the charge that moves through

Temka [501]

Answer:

a. the product of the current and the time interval

Explanation:

the basic formula is: $Q = It$

current means the time rate of flow of charge: $I =\frac{Q}{t}$

where Q - charge

I - current

t - time

4 0

3 years ago

5. Find the velocity of a train that traveled 75 km in 35 minutes. (answer

iogann1982 [59]

75km=75000m

35min=2100 seconds

Velocity=Displacement/Time

=75000/2100

=750/21

=35.71 m/s

3 0

2 years ago

Which of the following is NOT a method of preventing physical hazards while preparing food?

xxTIMURxx [149]

Answer: The answer is D) Keeping the food preparation area free of clutter

Explanation: TBH it just make so much sense

8 0

3 years ago