Two cars are heading towards each other but are 12 km apart. one car is going 70 km/hr, and the other is going 50 km/hr. how much time do they have before they collide head on?

Two loudspeakers 42.0 m apart and facing each other emit identical 115 Hz sinusoidal sound waves in a room where the sound speed is 345 m/s. Susan is walking along a line between the speakers.

What is the difference between percent by mass and percent by volume?

The resultant force acting on an object of mass 5.0kg varies with time as shown. the object is initially at rest.

What energy resourse is made from the remains of fossolized sea animals

The train departed 100 meters in 10 seconds How far has the train gone in the last 2 seconds

a car moves from a to b at a speed of 50km per hr and comes back from b to a at a speed of 30km per hour. find its average speed during the journey

In which of the following can you not find plasma

The conservation of energy covers all types of energy. This lesson has only provided a handful of examples of it. To be more convinced that it works in another context, devise an experiment to evaluate the conservation of energy.

Which technology category would NOT likely be the subject of a standard published by the International Electrotechnical Commission (IEC) ? A. Semiconductors B. Solar energy C. Encryption D. Consumer appliances

In the kitchen of your house you would like to run a 240 W blender, a 30 W phone charger, a 720 W toaster oven, and two 120 W lights. Assuming your house is wired for 120 Volts, how much current will be pulled by these electrical devices?