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3 years ago

14

Which measurement tool is used to find the volume of a small piece of granite? Select one: a. thermometer b. metric ruler c. gra

duated cylinder d. triple beam balance

1 answer:

Natalka [10]3 years ago

3 0

Answer:

Explanation:

c. graduated cylinder

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Which of the following are used in an electrochemical cell?

yanalaym [24]

Answer:

B please give me brainlyest

Explanation:

6 0

3 years ago

The magnetic field at the earth's surface can vary in response to solar activity. During one intense solar storm, the vertical c

Natalka [10]

Answer:

$EMF = 1684.67 Volts$

Explanation:

As we know that EMF is induced in a closed conducting loop if the flux linked with the loop is changing with time

So we can say

$EMF = \frac{d\phi}{dt}$

now we have

$\phi = BA$

here since magnetic field is constant so we have

$EMF = A\frac{dB}{dt}$

now we have

$A = (190 \times 10^3)(190 \times 10^3)$

$A = 3.61 \times 10^{10} m^2$

now we have

$EMF = 3.61\times 10^{10} (\frac{2.8 \times 10^{-6}T}{60 s})$

$EMF = 1684.67 Volts$

6 0

3 years ago

Potential energy of an apple is 6j. the apple is 3.00m high. what is the mass of the apple?

HACTEHA [7]

Answer:

0.2 kg

Explanation:

PE = mgh

6 J = m (9.8 m/s²) (3.00 m)

m = 0.2 kg

5 0

3 years ago

A constant current source supplies a electric current of 200 mA to a load of 2kΩ. When the load changed to 50Ω, the load current

serious [3.7K]

Answer:

700ma

Explanation:

all u do is have to add them up.

4 0

3 years ago

Correct your friend that says, "The dragster rounded the curve at a constant velocity of 100 km/h." In other words, what is wron

Ainat [17]

Answer:

Correct statement will be dragster rounded the curve with constant speed

Explanation:

It is given that his fried says that The dragster rounded the curve with a constant velocity of 100 km/hour

It is a wrong statement because in circular motion velocity will never constant as the direction of speed is always changing

The correct statement will be dragster rounded the curve with a constant speed because speed may be constant in circular motion

8 0

3 years ago