All zeros between non-zero digits are significant. true or false

A motorist enters a freeway at 45 km/h and accelerates uniformly to 99 km/h. From the odometer in the car, the motorist knows that she traveled 0.2 km while accelerating.

If a photon has a frequency of 5.20 * 1014 hertz, what is the energy of the photon? Given: Planck's constant is 6.63 * 10-34 joule·seconds.

When a device is used in a circuit in which the voltage is 81 V, the current flowing through the device is 3a. what is the resistance of the device?

A force is applied to an object at rest with a mass of 100 kg. A force twice as large is applied to another object at rest with a mass of 100 kg. What differences in their motion would you observe? Explain your reasoning.

A traveler first drives 18.6 km east, then 30.3 km southeast, and finally 10.7 km south. Find the traveler's total displacement?

Which concept was supported by taking measurements of the same stars at night and then again during solar eclipses?

Which of these is a biotic factor? A) topography B) soil C) air D) bacteria

One reason it's often easy to miss and action reaction pair is because of?

Recently, some information about a distant planet was learned. It has a radius of 6000000 meters, and the density of the atmosphere as a function of the height h (in meters) above the surface of the planet is given by δ (h) =

Which of the following is not a good approximation of the relationship between independent and dependent variables? A. independent: first, dependent: next B. independent: input, dependent: output C. independent: cause, dependent: effect D.