Select all that apply so it’s not just one answer. please and thanks :))

Steve is planning his annual Spring Break road trip. He pulls out his map and draws out his route to visit the five locations th

Aleksandr [31]

Answer:

His average speed.

Explanation:

Average speed = Total distance travelled / total time .

In the given case odometer measures total distance travelled . Dividing it by time will give average speed .

Average velocity can not be the answer as it is measured by dividing displacement by time . Displacement here is zero because initial and final point are same . Instantaneous velocity is given by the speedometer . It keeps on changing all the time . It is actually speed at a particular point of time . It can not be average velocity or speed .

8 0

3 years ago

A vertical straight wire carrying an upward 28-A current exerts an attractive force per unit length of 7.83 X 10 N/m on a second

JulijaS [17]

Answer:

$i_2 = 978750 A$

Since the force between wires is attraction type of force so current must be flowing in upward direction

Explanation:

Force per unit length between two current carrying wires is given by the formula

$F = \frac{\mu_0 i_1 i_2}{2 \pi d}$

here we know that

$F = 7.83 \times 10 N/m$

$d = 7.0 cm = 0.07 m$

$i_1 = 28 A$

now we will have

$F = \frac{4\pi \times 10^{-7} (28.0)(i_2)}{2\pi (0.07)}$

$7.83 \times 10 = \frac{2\times 10^{-7} (28 A)(i_2)}{0.07}$

$i_2 = 978750 A$

Since the force between wires is attraction type of force so current must be flowing in upward direction

3 0

3 years ago

Express the measurement 0.00000575 into scientific notation.

g100num [7]

Answer: = 5.75 × 10 -6

Explanation:

= 5.75 × 10-6

(scientific notation)

= 5.75e-6

(scientific e notation)

= 5.75 × 10-6

(engineering notation)

(millionth; prefix micro- (u))

= 0.00000575

(real number)

7 0

3 years ago

Mike stands on a scale in an elevator. If the elevator is accelerating upwards with 4.9 m/s2, the scale reading is ____ times Mi

Bas_tet [7]

Answer:

F - M a force exerted by scales on student

M a = M (9.8 + 4.9) m/s^2 upwards chosen as positive

a = 1.5 g net acceleration of student due to force of scales

W =M g weight of student (actual weight)

Wapp = M 1.5 * g apparent weight (on scales) of student

7 0

3 years ago

alpha decay is a nuclear decay in which a helium nucleus is emitted. If the helium nucleus has a mass of 6.8*10^-27 kg and is gi

almond37 [142]

Answer:

16520931.465 m/s

Explanation:

K = Kinetic energy = 5.8 MeV

m = Mass of nucleus = $6.8\times 10^{-27}\ kg$

Speed of a particle is given by

$v=\sqrt{\dfrac{2K}{m}}\\\Rightarrow v=\sqrt{\dfrac{2\times 5.8\times 10^6\times 1.6\times 10^{-19}}{6.8\times 10^{-27}}}\\\Rightarrow v=16520931.465\ m/s$

The velocity is 16520931.465 m/s

4 0

3 years ago