Other Physics Answers

A mother is pulling her son on a sled. She exerts a force of 150 N at an angle of 30°. If the total mass of the child and sled is 80 kg and the µ between the sled and the snow is -0.15, how much work is done if the sled travels 100 meters? 

A student of physics measured the dimensions of metal bar as 12.2cm x 0.94 the student calculated the volume of the bar and recorded it as 26.36cm.us this correct value for the measured volume?state the correct value

A 7.0 Ohms resistor is connected in the series with another resistor and a 4.5 V battery. The current is 0.60 A. calculate the value of the unknown resistance.

You start in the basement and notice that it is freezing cold! Even though you are inside it is noticeably colder than the first floor of your house. Why is it so much colder here than on the first floor?

2. Which one of the following is the longest length? (4)

A) 100 decimeters C) 105 millimeters E) 10-7 nanometers

B) 10-2 centimeters D) 101 meters

1. An object is 70 micrometers long and 47.66 micrometers wide.how long and wide is the object in km?

Three vectors are: a= [1/4], b = [-3/5], c = [2/-9], workout the following ,a-c

What is the mathematical expression for the time period of simple pendulum. Derive it

What is the frequency of a wave that has a speed of 15 m/s and wavelength of 5 m?

Determine for each of the following moons if they can create a total solar eclipse on their planet.

Phobos(Moon) ---11 km(Radius) ---- 9376 km(Distance to its Planet) --- Mars(is the Planet) ---- 228 x 10^6 km(distance to the Sun)

Callisto(Moon) --- 2410 km(Radius) ---- 1.883 x 10^6 km(Distance to its Planet) --- Jupiter(is the Planet) ---- 779 x 10^6 km(distance to the Sun)

Titan(Moon) ---   2574 km(Radius) ---- 1.222 x 10^6 km(Distance to its Planet) --- Saturn(is the Planet) ---- 1433 x 10^6 km(distance to the Sun)

Oberon(Moon) --- 761 km(Radius) ---- 0.584 x 10^6 km(Distance to its Planet) --- Uranus(is the Planet) ---- 2875 x 10^6 km(distance to the Sun)

Note: The radius of the Sun is 696 x 10^3 km.

Please answer as fast as possible!!! It's urgent!!!