Muscles in animals are often found in pairs, because

A. muscles can only produce a force as they relax.

B. muscles can only pull.

C. muscles need to be able to both push and pull.

D. muscles can only push.

Which one of the following is not a common acid? A. Baking soda B. Vinegar C. Aspirin D. Antiseptic

Work is done when a force that is applied to an object moves that object. If a panda bends and breaks a bamboo shoot, is that work? Question 1 options: A) Yes, the bamboo moves because of the force, so that is work.

1. Describe cómo se llevó a cabo la consumación de la Independencia en Nueva Galicia y menciona algunos de los personajes que participaron en este acontecimiento histórico

Which of the following types of weather data is collected in inches or centimeters? A. air pressure B. cloud cover C. rainfall D. wind speed

A crate slides down a ramp at a constant velocity. the ramp has an incline of 28 degrees above the horizontal the crate weighs 200 Newton's

the half-life of carbon - 14 is 5730 years. What fraction of carbon-14 would remain after 11,460 years?

An object with a mass of 10.9 kg experiences a force of 18.53 N. What is the acceleration of the object? A. 2.2 m/s2 B. 1.7 m/s2 C. 16.83 m/s2 D. 1.3 m/s2

A proton, starting from rest, accelerates through a potential difference of 1.0 kV and then moves into a magnetic field of 0.040 T at a right angle to the field. What is the radius of the proton's resulting orbit

Which of the following terms are needed to completely describe speed? Check all that apply. A. Units B. Direction C. Number D. Mass

Drivers are able to see objects ahead of them because light travels through windshields.