relative to O is (6i + 12j) km‚ where i and j are unit vectors directed due east and due north respectively. The ship P is moving with velocity 10j km h–1 and Q is moving with velocity (−8i + 6j) km h−1. At time t hours the position vectors of P and Q relative to O are p km and q km respectively. (a) (b) (c) Find p and q in terms of t. (3) Calculate the distance of Q from P when t = 3. (3) Calculate the value of t when Q is due north of P. (2) (Total 8 marks) 2. A train starts from rest
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Acceleration Worksheet 3 Worked Example A cheetah running at 20 m s−1 slows down as it approaches a stream. Within 3.0s‚ its speed has reduced to 2 m s−1. Calculate the average acceleration of the cheetah. Solve the following: 1. A sports car‚ accelerating from rest‚ was timed over 400 m and was found to reach a speed of 120 km h−1 in 18.0 s. a. What was the average speed of the car in m s−1? b. Calculate the average acceleration of the car in km h−1 s−1. c. What was
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Temperature and Enzyme Activity Aim: To investigate the effect of temperature on enzyme activity Hypothesis: As the temperature deviates from 40°C the activity will lower Equipment: – Chemicals: – Milk – Junket tablets – Hot water – Ice – Test tubes – Stopwatch – Measuring cylinder Risk Assessment: |Hazard |Risk |Prevention | |Hot Water
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Locomotor activity The Locomotor activity (Pákáski and Kálmán‚ 2008) refers to the movement of spontaneous locomotor and exploratory activity in rodents. LMA is a simple performed measurement of behavior to detect the effects of drugs‚ genetic manipulation‚ etc.‚ on motor function by measuring horizontal‚ vertical and stereotyped behavior in rodents. Several measures of locomotor activity in rats‚ including the distance covered‚ movement time and speed of progression. This test is sensitive to
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In a world without gravity‚ one would be weightless‚ but always nauseous. Because of this‚ it would be very difficult to complete a lot of your daily activities without throwing up. If you tried to eat something while you and your food are floating around‚ you will probably have a lot of trouble trying to hold your food down. In 0-g‚ life would be very hard. Roller coasters are a perfect example of this. I do not do well on roller coasters. I get sick when I encounter zero gravity for that split second
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LABORATORY REPORT Activity 11: Homeostatic Imbalances of Thyroid Function Name: Instructor: Date: PREDICTIONS 1. TSH levels in patients with primary hypothyroidism are: 2. Thyroxine (T4) levels in patients with primary hypothyroidism are: 3. TSH levels in patients with secondary hypothyroidism are: 4. Thyroxine (T4) levels in patients with secondary hypothyroidism are: 5. TSH levels in patients with hyperthyroidism are: 6. Thyroxine (T4) levels in patients with hyperthyroidism are:
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How Temperature Affects Amylase Activity Abstract This study of the effect of temperature on the enzyme amylase was performed to determine the relationship between the enzyme amylase and temperature. The rate of reaction was found to increase as the temperature of the environment was raised. As the temperature was raised from 5°C‚ 20°C‚ 35°C and finally to 80°C the rate of reaction followed this trend and also increased. However as predicted in the hypothesis of this experiment when the temperature
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The Determination of the Effect of pH on Amylase Activity Grace Chung Abstract: Amylase is an important enzyme in the human body as it allows for the consumption of starch by breaking the polysaccharide down into maltose units. All enzymes‚ including amylase‚ function best at a certain optimal pH. Therefore‚ in this experiment‚ the effect of different pHs on the reaction rate of amylase is studied. It was hypothesized that the amylase-starch reaction would proceed fastest at a pH closest to
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Buch‚ Claudia M.; Neugebauer‚ Katja; Schröder‚ Christoph Working Paper Changing forces of gravity: How the crisis affected international banking ZEW Discussion Papers‚ No. 14-006 Provided in Cooperation with: ZEW - Zentrum für Europäische Wirtschaftsforschung / Center for European Economic Research Suggested Citation: Buch‚ Claudia M.; Neugebauer‚ Katja; Schröder‚ Christoph (2014) : Changing forces of gravity: How the crisis affected international banking‚ ZEW Discussion Papers‚ No. 14-006 This Version
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ROTATIONAL KINEMATICS‚ MOMENT OF INERTIA | 1. A child is pushing a merry-go-round. The angle through the merry-go-round has turned varies with time according to θ(t) = γt + βt3‚ where γ = 0.400 rad/s and β = 0.0120 rad/s3. a. Calculate the angular acceleration as a function of time. b. What is the initial value of the angular velocity? c. Calculate the instantaneous value of the angular velocity at t =5.00 s and the average angular velocity for the time interval t = 0 to t = 5.00 s. 2. At t
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