# physics science

Popular questions
1. ## physics science

a ball thrown vertically upward lands on the thrower's hand 24.5s. find (a) the time taken by the ball to reach its maximum height,(b) the maximum height attained by the ball, and (c) initial velocity of the ball

asked by john on September 8, 2017
2. ## Physics science

Dana and Gina are pushing on a box. Dana pushes with 250 N of force and Gina pushes with 100 N of force. A. What is the net force if tey both push the box in the same direction. B. what is the net force if they push in the opposite directions?

asked by Ashley on September 27, 2012
3. ## Physics Science

How many kilocalories of heat are required to melt 20.0 kg of ice at 0°C? Okay so the given is m=20.0kg Ti=0°C HeatFusionIce=80 kcal/kg

asked by Ben Green on November 7, 2014
4. ## Physics Science

(a) Find the total force on the bottom of a cylindrical gasoline storage tank 15.0 m high with radius 23.0 m. (b) Find the total force on the side of the tank.

asked by Ben on October 27, 2014
5. ## Physics science

A 10 ohm, 20 ohm lamp and 12v battery are connected in a parallel. A current of 1.8 A passes through the battery and a current of 1.2 A passes through the motor. 1) Determine the current through the lamp. 2) Calculate the potential difference across the

asked by Tina on November 10, 2016
6. ## physics science

The photoelectric effect occurs only when the incident light has more than a entain minimum

asked by Tammie Mitchell on July 14, 2011
7. ## Physics Science

Mary mixes 5.00 lb of water at 200°F with 7.00 lb of water at 65.0°F. Find the final temperature of the mixture. -Specific Heat of water is 1.00 BTU/lbs°F

asked by Ben on November 5, 2014
8. ## Physics Science

How many grams of water at 20°C are necessary to change 800g of water at 90°C to 50°C? so its setup like (20*1.00)*(90-50)+(20*1.00)*(90-50) = 1600g?

asked by Digby on November 5, 2014
9. ## physics science

a 750kg motor car is moving at a constant force of 27m/s on a staight horizontal road. The frictional force expirience by the motor car travelling on the road is 680N. Calculate the power delivered by the motoq car

asked by mvelo on February 18, 2013
10. ## physics science

3. An unknown element produces a spectral line of 425nm. A. Calculate the energy of the emitted photon in joules. B. What is the energy of the emitted photon in electron-volts?

asked by suszan on January 23, 2012
11. ## physics science

a 750kg motor car is moving at a constant force of 27m/s on a staight horizontal road. The frictional force expirience by the motor car travelling on the road is 680N. Calculate the power delivered by the motoq car

asked by mvelo on February 18, 2013
12. ## physics science

Please can you help as I am stuck, Describe ib detail, how you would carry out an investigation to measure the density of a block of aluminium? Thankyou

asked by chloe on January 31, 2012
13. ## physics science

Please can you help as I am stuck, Describe ib detail, how you would carry out an investigation to measure the density of a block of aluminium? Thankyou

asked by chloe on January 31, 2012
14. ## physics science

if you wish to warm 95 kg of water by 20.0c for your bath how much heat is required

asked by mary on October 30, 2011
15. ## Physics Science

How many grams of water at 20°C are necessary to change 800g of water at 90°C to 50°C?

asked by Ben on November 5, 2014