Which of the following is not a vector? Velocity Momentum Acceleration Mass

Three resistors, each having a resistance, R, are connected in parallel to a 1.50 V battery. If the resistors dissipate a total

ivanzaharov [21]

Answer:

The value of resistance of each resistor, R is 2.25 Ω

Explanation:

Given;

voltage across the three resistor, V = 1.5 V

power dissipated by the resistors, P = 3.00 W

the resistance of each resistor, = R

The effective resistance of the three resistors is given by;

R(effective) = R/3

Apply ohms law to determine the current delivered by the source;

V = IR

I = V/R

I = 3V/R

Also, power is calculated as;

P = IV

P = (3V/R) x V

P = 3V²/R

R = 3V² / P

R = (3 x 1.5²) / 3

R = 2.25 Ω

Therefore, the value of resistance of each resistor, R is 2.25 Ω

4 0

4 years ago

A young woman named kathy kool buys a sports car that can accelerate at the rate of 5.37 m/s 2 . she decides to test the car by

ohaa [14]

As the stan moves 0.94 s before with an acceleration 4.12 m/s^2

so the distance moved by it

$d = \frac{1}{2}at^2[tex]d = \frac{1}{2}*4.12*0.94^2$

$d = 1.82 m$

speed gained by the car is given as

$v = v_i + at$

$v = 4.12* 0.94 = 3.873 m/s$

now the relative speed of them is given as

$v_r = 3.873 - 0 = 3.873 m/s$

relative acceleration is given as

$a_r = 4.12 - 5.37 = -1.25$

now the distance between them is to be covered

$d = v_r * t + \frac{1}{2}a_r * t^2$

$1.82 = -3.873* t + \frac{1}{2}*1.25 * t^2$

by solving above equation we have

$t = 6.64 s$

so it will overtake after 6.64 s

5 0

4 years ago

Read 2 more answers

As a wave moves through medium particles are displaced and

Alborosie

Answer:

And return to their normal position after the wave passes.

Explanation:

Even though their positions are changed drastically after the wave in a medium, they eventually return to their original positions.

Hope this Helps!

8 0

3 years ago

Two masses traveling at the same speed v₀ collide head on. Nothing is known about the collision other than that it is not comple

alex41 [277]

Answer:

false

Explanation:

Elastic collision: the collision is said to be elastic if the kinetic energy is conserved during the collision.

If the kinetic energy is not conserved, then the collision is not elastic.

So, here no information is given so we cant say about the type of collision.

So, it is False.

4 0

3 years ago

Two identical 0.50-kg carts, each 0.10 m long, are at rest on a low-friction track and are connected by a spring that is initial

Keith_Richards [23]

Answer:

The system's kinetic energy changes by 3.6 J

Explanation:

The given parameters are;

The number of cart = 2

The mass of each cart = 0.5kg

The initial length of the spring = 0.50 m

The final length of the spring =T0.3 m

The change in position of the first cart = 0.6 m

The energy given to the first cart = Work done by the force = Force × Displacement

The initial kinetic energy of the two cart moving together = Energy given to the first cart = 6.0 × 0.2 = 1.2J

The kinetic energy given to the two cart combined = The applied force × The total displacement of the two cart as they move together

The kinetic energy given to the two cart combined = 6.0 × (0.6 - 0.2)

The kinetic energy given to the two cart combined = 6.0 × 0.4 = 2.4 J

The total kinetic energy given to the two cart = 1.2 + 2.4 = 3.6 J

The total kinetic energy given to the two cart = 3.6 J

The system's kinetic energy changes by 3.6 J.

8 0

3 years ago