Exam 7: HESI-A2-Physics

When a small object is released from the top of a skyscraper, it takes the object 9 secs to hit the ground. Given this information, what can you say about the height of the skyscraper?

A 4.5 m tall object is placed 1.4 m away from a convex mirror and has an image height of 3.5 m. What is the image distance?

What is the unit of measure for frequency?

A car of 900 kg mass is driven around a circular race track of 600 m radius at a constant velocity of 220 km/h. What is the centripetal acceleration of the car?

A person has a mass of 76 kg. What is this person's weight on Earth?

Marsha goes cliff jumping. She has a mass of 72 kilograms and is accelerating at almost 10 m/s². What is the Force she experiences when she hits the water?

Marcus, a pitcher, throws a ball to home plate at 50 m/s. If home plate is 8 meters from the pitcher's mound. How many seconds does it take the ball to reach the catcher?

Which of the following is the term given to the distance between the center of a convex lens and the principal focus?

If a spring is being stretched 25 cm with a force of 15 N, how far will it stretch if the force is increased to 24 N?

A fan that was rotating at a speed of 450 revolutions per second for 5 minutes had its speed setting turned down to 240 revolutions per second after 5.5 minutes. What is the angular acceleration over this period of time?

A 2 m tall lamp is placed 1.25 m from a double convex lens that has a focal length of 0.75 cm. What is the image height of the lamp?

What are the three elements that are influenced in magnetic fields?

What would be the magnitude of the resulting force between an object of charge 75μC and another object of charge 50 μC that are placed 4 m apart?

Which one of the following is the definition of the Crest of a wave?

What is the term given to the phenomenon that occurs when light bends as it passes from one medium into another?

A circuit consists of 5 identical light bulbs with 80 Ohm resistance each. If the bulbs are placed in a series and then wired to a 120 V power supply, what would be the current flowing in the circuit?

Two balloons carrying charges of 5 μC and 8μC are 25 cm apart. Determine the magnitude of the force between them.

A ball attached to a pole by a rope swings around in a circular path for 4.5 m. If the distance from the pole to the ball at the end of the rope is 3.5 m, what is the angular displacement of the ball?

A 2 kg dog runs southwest at a velocity of 1.5 m/s. What is its momentum?

Jenny and Bella are planning a road trip. Their total distance is 381 miles. If they drive at an average speed of 60 mph, how long will the two be in the car for?