All categories

3 years ago

Symbol of science hhshsjsiwtwwisjzhJava

Physics

1 answer:

Rudik [331]3 years ago

6 0

Answer:

is this a company name.? java is a computer software right..

You might be interested in

9. How much work is done when a 15kg box is lifted to a height of 2 meters?

torisob [31]

Answer: W = 294 J

Explanation: Solution:

Work is expressed as the product of force and the distance of the object.

W = Fd where F = mg

W= Fd

= mg d

= 15 kg ( 9.8 m/s²) ( 2m )

= 294 J

5 0

4 years ago

A particular automotive wheel has an angular moment of inertia of 12 kg*m^2, and is decelerated from 135 rpm to 0 rpm in 8 secon

lozanna [386]

Answer:

(A) Torque required is 21.205 N-m

(b) Wok done will be equal to 1199.1286 j

Explanation:

We have given moment of inertia $I=12kgm^2$

Wheel deaccelerate from 135 rpm to 0 rpm

135 rpm = $135\times \frac{2\pi }{60}=14.1371rad/sec$

Time t = 8 sec

So angular speed $\omega _i=135rpm$ and $\omega _f=0rpm$

Angular acceleration is given by $\alpha =\frac{\omega _f-\omega _i}{t}=\frac{0-14.1371}{8}=--1.7671rad/sec^2$

Torque is given by torque $\tau =I\alpha$

$=12\times 1.7671=21.205N-m$

Work done to accelerate the vehicle is

$\Delta w=K_I-K_F$

$\Delta W=\frac{1}{2}\times 12\times 14.137^2-\frac{1}{2}\times 12\times0^2=1199.1286J$

8 0

4 years ago

Please I need help........

LenKa [72]

Answer:

7.46 J/kg/K

Explanation:

The heat absorbed or lost is:

q = mCΔT

where m is the mass, C is the heat capacity, and ΔT is the change in temperature.

Given q = 15.0 J, m = 0.201 kg, and ΔT = 10.0 °C:

15.0 J = (0.201 kg) C (10.0 °C)

C = 7.46 J/kg/°C

Which is the same as 7.46 J/kg/K.

7 0

3 years ago

Read 2 more answers

The motor of a ski boat generates an average power of 2.74 × 10^4 W when the boat is moving at a constant speed of 14.3 m/s. Whe

Roman55 [17]

Answer:

T = 4517.48 N

Explanation:

It is given that,

Average power of the motor, $P_1=2.74\times 10^4\ W$

Speed of the boat, $v_1=14.3\ m/s$

Force or tension acting on the motor at this point is given by :

$P=T\times v$

$T=\dfrac{P_1}{v_1}$

$T=\dfrac{2.74\times 10^4}{14.3}$

T = 1916.08 N

Average power generated by the engine, $P_2=9.2\times 10^4\ W$

Force or tension acting on the motor at this point is given by :

$P=T\times v$

$T=\dfrac{P_2}{v_2}$

$T=\dfrac{9.2\times 10^4}{14.3}$

T = 6433.56 N

So, the tension in the tow rope that is pulling the skier is, T = 6433.56 N - 1916.08 N = 4517.48 N

4 0

3 years ago

I need help ASAP!!!!<br> Which diagram BEST represents a convection heating current?

Marina86 [1]

Its the first one with the circle and the arrows going around it

5 0

3 years ago

Read 2 more answers

Symbol of science hhshsjsiwtwwisjzhJava​

Symbol of science hhshsjsiwtwwisjzhJava