What are the benefits of physical exercises?

What is the name given to this group of elements? 9 F 17 CI 35 Br 53 85 At a. halogens b. alkali metals C. transition metals d. noble gases

Which is true? An ideal emf device has internal resistance and a real emf device does not. A real emf device sets up a potential difference and an ideal emf device does not.

Score: The lowest possible energy position for an electron is known as the ground state. a. True b. False

If two vectors a equals to 4 metre per second and b is equals to 7 metre per second be inclined at an angle of 60 degree to each other then determine the direction and magnitude of the resultant

What is the net force required to give an automobile of mass 1600 kg an acceleration of 4.5 m/s2?

A bus travels 300 km south along a straight path with an average velocity of 85 km/h to the south. The bus stops for 22 minutes. Then it travels 220 km south with an average velocity of 78 km/h to the south.

In what way does varying the length of the string change the vibration

A 1200 kg car moving at 7.8 m/s collides with a stationary car of mass 1500 kg. if the two vehicles lock together, what is their combined velocity immediately after the collision?

Which have more kinetic energy a 100g ball, a 200g ball, or a 500g ball explain

An internal combustion engine uses fuel, of energy content 44.4 MJ/kg, at a rate of 5 kg/h. If the efficiency is 28%, determine the power output and the rate of heat rejection.