**Answer:1.26 m/s**

**Explanation:**

Given

translation speed of ball =3.5 m/s

Moment of inertia of ball about com

Initial Energy

Final Energy

Equating energy as no energy loss take place

m term get cancel

**Answer:**

**Pressure = 9.94 x 10⁶ Pascals**

**Explanation:**

**given data **

mass = 51 kg

radius = 0.400 cm

**solution**

we know Pressure that is express as here

Pressure = total force on an area ÷ the area of the area .................1

and

Force is the woman's weight so weight will be

Weight = mass × gravity .................2

put here value

Weight = 51 × 9.8 m/s²

**Weight = 499.8 Newtons**

and

Area of a circle of bottom of the heel = (π) × (radius)² ...................3

put here value

Area = (π) × (0.40 cm)²

Area = 0.502654 cm²

**Area = 0.0000502654 m²**

and

now we put value in equation 1 we get

Pressure = force ÷ area

Pressure = 499.8 ÷ 0.0000502654

Pressure = 9943221.381 N/m²

**Pressure = 9.94 x 10⁶ Pascals**

Answer:

0 N

Explanation:

Magnetic force for charges moving in wire is given by

F = qvB sin θ

It can also be rewritten for a current carrying wire as

F = ILB sin θ

IL = product of the length of wire and magnitude of the current vector

B = magnetic field.

θ = the angle between the direction of current flow and the magnetic field. For this question, the direction for the two are both parallel; θ = 0°

F = IL B sin 0 = 0 N

Hope this Helps!!!

**Answer:**

a) , b) solar masses

**Explanation:**

Let suppose that galaxy can be treated as a puntual mass.

**a)** The acceleration experimented by the star is:

The angular speed of the star is:

The period is:

**b)** The period is:

The angular speed is:

The acceleration experimented by the star is:

The mass of the galaxy is:

Which is equal to solar masses.