Which type of magnet is created from an electromagnet

Carl went on a Euro Trip and was traveling from Spain to Russia. When he looked on the map it said Russia was 7035 km away from

bija089 [108]

Answer:

The average speed would be 279.167 meters per second.

Explanation:

Speed is the magnitude that expresses the variation in position of an object and as a function of time. In other words, speed is defined as the relationship established between the distance traveled and the time elapsed in the movement of a mobile.

Speed can be calculated using the following expression:

$Speed=\frac{distance}{time}$

In this case:

distance= 7,035 km
time= 7 hours

Since the required unit of speed is meter per second, then you convert from km to meters for the case of distance, and from hours to seconds for the case of time. So:

distance= 7,035 km= 7,035,000 m (being 1 km= 1,000 m)
time= 7 hours= 420 minutes= 25,200 seconds (being 1 hour=60 minutes and 1 minute=60 seconds)

Replacing in the definition of speed:

$Speed=\frac{7,035,000 meters}{25,200 seconds}$

Solving:

$Speed=279.167\frac{meters}{ seconds}$

Then, the average speed would be 279.167 meters per second.

3 0

3 years ago

9. A 30 cm ruler is found to have a center of mass of 15.6 cm. The percent error of the center of mass is _____, if the ruler is

grigory [225]

Answer:

3.85 percent

Explanation:

From the question,

Percentage error = (error/actual)×100................ Equation 1

Given: actual center of mass = 15 cm, error = 15.6-15 = 0.6 cm

Substitute these values into equation 1

Percentage error = (0.6/15.6)×100

Percentage error = 3.85 percent

Hence the percentage error of the uniform mass = 3.85 percent

4 0

3 years ago

A bullet is fired at a speed of 2434 ft/s. what is this speed expressed in millimeters per minute?

NikAS [45]

44,512,992 mm/m. Hopefully...

4 0

3 years ago

Driving at a safe speed is particularly important because kinetic energy __________.

oksian1 [2.3K]

The correct answer is
b. increases with the square of speed

In fact, the kinetic energy of a moving object is given by
 $K= \frac{1}{2}mv^2$
where m is the mass of the object and v is its speed. We see that the kinetic energy is directly proportional to the square of the speed, therefore option B is the correct one.

5 0

3 years ago

witch of the following is the least reliable source of background information for a scientific project.

Tems11 [23]

Primary sources are most often produced around the time of the events you are studying.

hopwe this helps

3 0

3 years ago

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